Daikin F-Series Service Manual

F-series inverter pair wall mounted type

Hide thumbs Also See for F-Series:

Service manual (355 pages)

Technical manual (51 pages)

Instruction manual (13 pages)

Table Of Contents

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

Table of Contents

Quick Links

See also: Service Manual , Technical Manual

Inverter Pair

Wall Mounted Type F-Series

[Applied Models]

Inverter Pair : Cooling Only

Inverter Pair : Heat Pump

Si04 - 703A

Table of Contents

Troubleshooting

Need help?

Do you have a question about the F-Series and is the answer not in the manual?

Questions and answers

Summary of Contents for Daikin F-Series

Page 1 Si04 - 703A Inverter Pair Wall Mounted Type F-Series [Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump...
Page 2 Si04-703A Inverter Pair F-Series Cooling Only Indoor Units FTKS50FVM FTKS50FVMA FTKS50FVLT FTKS60FVM FTKS60FVMA FTKS60FVLT FTKS71FVM FTKS71FVMA FTKS71FVLT Outdoor Units RKS50FVM RKS50FVMA RKS50FVLT RKS60FVM RKS60FVMA RKS60FVLT RKS71FVM RKS71FVMA RKS71FVLT RKS71GVMG Heat Pump Indoor Units FTXS50FVMA FTXS50FVLT FTXS60FVMA FTXS60FVLT FTXS71FVMA FTXS71FVLT FTXS80FVMA...
Page 3: Table Of Contents
Si04-703A 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................5 Part 2 Specifications ..............9 1. Specifications ..................10 1.1 Cooling Only...................10 1.2 Heat Pump .....................15 Part 3 Printed Circuit Board Connector Wiring Diagram ...
Page 4 Si04-703A 3.14 Additional Function.................57 Part 5 Operation Manual ............. 59 1. System Configuration................60 2. Instruction....................61 2.1 Safety Precautions .................61 2.2 Names of Parts..................63 2.3 Preparation Before Operation ..............66 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........69 2.5 Adjusting the Airflow Direction..............71 2.6 POWERFUL Operation ................73 2.7 OUTDOOR UNIT QUIET Operation............74...
Page 5 Si04-703A Part 7 Removal Procedure ............139 1. Indoor Unit...................140 1.1 Removal of Air Filter / Front Panel ............140 1.2 Removal of Front Grille ................143 1.3 Removal of Horizontal Blades / Vertical Blades ........145 1.4 Removal of Electrical Box / PCB / Swing Motor ........147 1.5 Removal of Heat Exchanger ..............153 1.6 Removal of Fan Rotor / Fan Motor............156 2.
Page 6: Introduction
Si04-703A Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 7 Introduction Si04-703A Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2m). Insufficient safety measures may cause a fall accident. In case of R410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R410A refrigerant.
Page 8 Si04-703A Introduction 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire.
Page 9 Introduction Si04-703A Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame.
Page 10: Used Icons
Si04-703A Introduction Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 MΩ or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor.
Page 11 Introduction Si04-703A...
Page 12: Part 1 List Of Functions
Si04-703A Part 1 List of Functions 1. List of Functions ..................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................5 List of Functions...
Page 13: List Of Functions
List of Functions Si04-703A List of Functions Cooling Only Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — Operation Limit for Cooling (°CDB) Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
Page 14 Si04-703A List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — Operation Limit for Cooling (°CDB) Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
Page 15 List of Functions Si04-703A Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — Operation Limit for Cooling (°CDB) Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
Page 16: Heat Pump
Si04-703A List of Functions Heat Pump Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — Operation Limit for Cooling (°CDB) Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
Page 17 List of Functions Si04-703A Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
Page 18 Si04-703A List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
Page 19 List of Functions Si04-703A List of Functions...
Page 20: Part 2 Specifications
Si04-703A Part 2 Specifications 1. Specifications ..................10 1.1 Cooling Only...................10 1.2 Heat Pump .....................15 Specifications...
Page 21: Specifications
Specifications Si04-703A Specifications Cooling Only 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTKS50FVM FTKS60FVM Model Outdoor Units RKS50FVM RKS60FVM 5.0 (1.7~6.0) 6.0 (1.7~6.7) Capacity Btu/h 17,100 (5,800~20,500) 20,500 (5,800~22,900) Rated (Min.~Max.) kcal/h 4,300 (1,460~5,160) 5,160 (1,460~5,760) Running Current Rated 7.2-6.9-6.6/7.2-6.9 9.2-8.8-8.4/9.2-8.8 Power Consumption 1,550 (440~2,080)
Page 22 Si04-703A Specifications 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTKS71FVM FTKS71FVM Model Outdoor Units RKS71FVM RKS71GVMG 7.1 (2.3~8.3) 7.1 (2.3~8.3) Capacity Btu/h 24,200 (7,800~28,300) 24,200 (7,800~28,300) Rated (Min.~Max.) kcal/h 6,110 (1,980~7,140) 6,110 (1,980~7,140) Running Current Rated 11.5-11.0-10.6/11.5-11.0 11.5-11.0-10.6/11.5-11.0 Power Consumption 2,510 (570~3,580) 2,510 (570~3,580) Rated (Min.~Max.)
Page 23 Specifications Si04-703A 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTKS50FVMA FTKS60FVMA Models Outdoor Units RKS50FVMA RKS60FVMA 5.0 (1.7~6.0) 6.0 (1.7~6.7) Capacity Btu/h 17,100 (5,800~20,500) 20,500 (5,800~22,900) Rated (Min.~Max.) kcal/h 4,300 (1,460~5,160) 5,160 (1,460~5,760) Running Current (Rated) 7.2-6.9-6.6 / 7.2-6.9 9.2-8.8-8.4 / 9.2-8.8 Power Consumption 1,550 (440~2,080) 1,980 (440~2,390)
Page 24 Si04-703A Specifications 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTKS71FVMA Models Outdoor Units RKS71FVMA 7.1 (2.3~8.5) Capacity Btu/h 24,200 (7,800~29,000) Rated (Min.~Max.) kcal/h 6,110 (1,980~7,310) Running Current (Rated) 10.8-10.4-9.9 / 10.8-10.4 Power Consumption 2,360 (570~3,200) Rated (Min.~Max.) Power Factor 99.3-98.7-99.3 / 99.3-98.7 3.01 (4.04~2.66) Rated (Min.~Max.) φ...
Page 25 Specifications Si04-703A 60Hz 220V Indoor Units FTKS50FVLT FTKS60FVLT FTKS71FVLT Model Outdoor Units RKS50FVLT RKS60FVLT RKS71FVLT 5.0 (1.7~6.0) 5.85 (1.7~6.7) 7.6 (2.3~8.3) Capacity Btu/h 17,100 (5,800~20,500) 20,000 (5,800~22,900) 25,900 (7,800~28,300) Rated (Min.~Max.) kcal/h 4,300 (1,460~5,160) 5,030 (1,460~5,760) 6,540 (1,980~7,140) Running Current Rated 13.8 Power Consumption 1,550 (440~2,080)
Page 26: Heat Pump
Si04-703A Specifications Heat Pump 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTXS50FVMA FTXS60FVMA Model RXS50FVMA RXS60FVMA Outdoor Units Cooling Heating Cooling Heating 5.0 (1.7~6.0) 5.8 (1.7~7.7) 6.0 (1.7~6.7) 7.0 (1.7~8.0) Capacity Btu/h 17,100 (5,800~20,500) 19,800 (5,800~26,300) 20,500 (5,800~22,900) 23,900 (5,800~27,300) Rated (Min.~Max.) kcal/h 4,300 (1,460~5,160)
Page 27 Specifications Si04-703A 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTXS71FVMA FTXS80FVMA Model RXS71FVMA(E) RXS80FVMA Outdoor Units Cooling Heating Cooling Heating 7.1 (2.3~8.5) 8.2 (2.3~10.0) 8.0 (2.3~9.0) 9.5 (2.3~10.2) Capacity Btu/h 24,200 (7,800~29,000) 28,000 (7,900~34,100) 27,300 (7,800~30,700) 32,400 (7,800~34,800) Rated (Min.~Max.) kcal/h 6,110 (1,980~7,310) 7,050 (1,980~8,600)
Page 28 Si04-703A Specifications 50Hz 220-230-240V / 60Hz 220-230V Indoor Units FTXS90FVMA Model RXS90FVMA Outdoor Units Cooling Heating 9.0 (2.3~9.7) 9.7 (2.3~11.0) Capacity Btu/h 30,700 (7,800~33,100) 33,100 (7,800~37,500) Rated (Min.~Max.) kcal/h 7,740 (1,980~8,340) 8,340 (1,980~9,460) Running Current 15.1-14.4-13.8 / 15.1-14.4 16.2-15.5-14.8 / 16.2-15.5 Rated Power Consumption 3,300 (570~3,970)
Page 29 Specifications Si04-703A 60Hz 220V Indoor Units FTXS50FVLT FTXS60FVLT Model RXS50FVLT RXS60FVLT Outdoor Units Cooling Heating Cooling Heating 5.0 (1.7~6.0) 5.8 (1.7~7.7) 5.85 (1.7~6.7) 7.12 (1.7~8.0) Capacity Btu/h 17,100 (5,800~20,500) 19,800 (5,800~26,300) 20,000 (5,800~22,900) 24,300 (5,800~27,300) Rated (Min.~Max.) kcal/h 4,300 (1,460~5,160) 4,990 (1,460~6,620) 5,030 (1,460~5,760) 6,120 (1,460~6,880)
Page 30 Si04-703A Specifications 60Hz 220V Indoor Units FTXS71FVLT Model RXS71FVLT Outdoor Units Cooling Heating 7.6 (2.3~8.3) 8.5 (2.3~10.0) Capacity Btu/h 25,900 (7,800~28,300) 29,000 (7,800~34,100) Rated (Min.~Max.) kcal/h 6,540 (1,980~7,140) 7,310 (1,980~8,600) Running Current Rated 13.8 11.9 Power Consumption 3,010 (570~3,580) 2,600 (520~3,780) Rated (Min.~Max.) Power Factor (Rated) 99.1...
Page 31 Specifications Si04-703A Specifications...
Page 32: Part 3 Printed Circuit Board Connector Wiring Diagram
Si04-703A Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........22 1.1 Indoor Units ....................22 1.2 Outdoor Units ..................24 Printed Circuit Board Connector Wiring Diagram...
Page 33: Printed Circuit Board Connector Wiring Diagram
Printed Circuit Board Connector Wiring Diagram Si04-703A 1. Printed Circuit Board Connector Wiring Diagram Indoor Units Connectors PCB(1) (Control PCB) Connector for DC fan motor Connector for swing motor (horizontal blades) Connector for swing motor (vertical blades) Connector for centralized control (HA) Connector for buzzer PCB Connector for signal receiver PCB...
Page 34: Signal Receiver Pcb
Si04-703A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) LED A (R2860) PCB(2): Signal Receiver PCB PCB(3): Buzzer PCB (R2861) RTH1 (R2862) PCB(4): Display PCB PCB(5): INTELLIGENT EYE sensor PCB LED1 LED2 LED3 (R2863) (R2864) Printed Circuit Board Connector Wiring Diagram...
Page 35: Outdoor Units
Printed Circuit Board Connector Wiring Diagram Si04-703A Outdoor Units Connectors PCB(1)(Main PCB) Connector for terminal strip (indoor-outdoor transmission) Connector for electronic expansion valve coil Connector for overload protector 4) S51, S101 Connector for service monitor PCB Connector for fan motor Connector for four way valve coil Connector for thermistors (outdoor air, heat exchanger, and discharge pipe)
Page 36 Si04-703A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Main PCB (outdoor unit 50/60 models) FU2(3.15A) (30A) S101 FU3(3.15A) (R5201) PCB(1): Main PCB (outdoor unit 71/80/90 models) FU2(3.15A) V100 (30A) FU3(3.15A) (R5202) Printed Circuit Board Connector Wiring Diagram...
Page 37 Printed Circuit Board Connector Wiring Diagram Si04-703A PCB(2): Service Monitor PCB LED A S102 (R5203) Printed Circuit Board Connector Wiring Diagram...
Page 38: Part 4 Function And Control
Si04-703A Part 4 Function and Control 1. Main Functions..................28 1.1 Frequency Principle................28 1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..30 1.3 Fan Speed Control for Indoor Units............31 1.4 Programme Dry Function ...............32 1.5 Automatic Operation................33 1.6 Thermostat Control.................34 1.7 Night Set Mode..................35 1.8 INTELLIGENT EYE ................36 1.9 HOME LEAVE Operation ...............38...
Page 39: Main Functions
Main Functions Si04-703A 1. Main Functions Note: See the list of functions for the functions applicable to different models. Frequency Principle Main Control The compressor is frequency-controlled during normal operation. The target frequency is set by the following 2 parameters coming from the operating indoor unit: Parameters The load condition of the operating indoor unit The difference between the room temperature and the set temperature...
Page 40 Si04-703A Main Functions Inverter Features The inverter provides the following features: The regulating capacity can be changed according to the changes in the outside temperature and cooling/heating load. Quick heating and quick cooling The compressor rotational speed is increased when starting the heating (or cooling). This enables a quick set temperature.
Page 41: Power-Airflow Dual Flaps, Wide Angle Louvers And Auto-Swing
Main Functions Si04-703A Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing Power-airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Dual Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards.
Page 42: Fan Speed Control For Indoor Units
Si04-703A Main Functions Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through rotation speed control and Hall IC control.
Page 43: Programme Dry Function
Main Functions Si04-703A Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. In Case of The microcomputer automatically sets the temperature and fan settings.
Page 44: Automatic Operation
Si04-703A Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.
Page 45: Thermostat Control
Main Functions Si04-703A Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.
Page 46: Night Set Mode
Si04-703A Main Functions Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set The Night Set circuit continues heating or cooling the room at the set temperature for the first Circuit one hour, then automatically raises the temperature setting slightly in the case of cooling, or lowers it slightly in the case of heating, for economical operations.
Page 47: Intelligent Eye
Main Functions Si04-703A INTELLIGENT EYE This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to save electricity. Processing 1.
Page 48 Si04-703A Main Functions Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.
Page 49: Home Leave Operation
Main Functions Si04-703A HOME LEAVE Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided.
Page 50: Inverter Powerful Operation
Si04-703A Main Functions 1.10 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the When POWERFUL button is pushed in each operation mode, the fan speed/setting temperature will be converted to the following states in a period of 20 minutes.
Page 51: Other Functions
Main Functions Si04-703A 1.11 Other Functions 1.11.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room.
Page 52 Si04-703A Main Functions 1.11.7 Auto-restart Function Even if a power failure (including one for just a moment) occurs during the operation, the operation restarts in the condition before power failure automatically when power is restored. (Note) It takes 3 minutes to restart the operation because the 3-minute standby function is activated.
Page 53: Function Of Thermistor
Function of Thermistor Si04-703A 2. Function of Thermistor Heat Pump Model Electrontic expansion valve Four way valve Compressor (R5204) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system sets a target discharge temperature according to the outdoor and indoor heat Exchanger exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor...
Page 54: Cooling Only Model
Si04-703A Function of Thermistor Cooling Only Model Electrontic expansion valve Compressor (R2828) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system sets a target discharge temperature according to the outdoor and indoor heat Exchanger exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor...
Page 55: Control Specification
Control Specification Si04-703A 3. Control Specification Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1. For heat pump model There are following modes; stop, cooling (includes drying), heating (include defrosting) Air conditioner control mode Forced operating mode Forced cooling (for Pump Down Operation)
Page 56: Frequency Control
Si04-703A Control Specification Frequency Control Outline Frequency will be determined according to the difference between room and set temperature. The function is explained as follows. 1. How to determine frequency. 2. Frequency command from an indoor unit. (The difference between a room temperature and the temperature set by the remote controller.) 3.
Page 57 Control Specification Si04-703A 2. Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipes, freeze prevention, dew prevention, fin thermistor temperature. 3. Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions: Pressure difference upkeep.
Page 58: Controls At Mode Changing / Start-Up
Si04-703A Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the outdoor air temperature, discharge pipe temperature, and fin temperature (internal temperature of PM1). Outside temperature ≥ 10°C → Control A (preheating for normal state) Detail Outside temperature <...
Page 59: Discharge Pipe Temperature Control
Control Specification Si04-703A 3.3.4 3-Minute Standby Prohibit to turn ON the compressor for 3 minutes after turning it off. (Except when defrosting. (Only for Heat Pump Model).) 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows.
Page 60: Input Current Control
Si04-703A Control Specification Input Current Control Outline The microcomputer calculates the input current during the compressor is running, and set the frequency upper limit from such input current. In case of heat pump model, this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation.
Page 61: Freeze-Up Protection Control
Control Specification Si04-703A Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from...
Page 62: Fan Control
Si04-703A Control Specification Fan Control Outline Fan control is carried out with following condition. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. Fan control for maintaining pressure difference 5.
Page 63: Defrost Control
Control Specification Si04-703A 3.10 Defrost Control Outline Heat Pump Only Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature.
Page 64: Electronic Expansion Valve Control
Si04-703A Control Specification 3.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Open Control 1.
Page 65 Control Specification Si04-703A 3.11.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.11.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization.
Page 66: Target Discharge Pipe Temperature Control
Si04-703A Control Specification 3.11.7 Control when frequency is changed When the target discharge pipe temperature control is active, if the target frequency is changed for a specified value in a certain time period, cancel the target discharge pipe temperature control and change the target opening of the electronic expansion valve according to the shift. 3.11.8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger...
Page 67: Malfunctions
Control Specification Si04-703A 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Fin thermistor 4. Outside air thermistor Relating to CT Malfunction When the output frequency is more than 55 Hz (71-90FVMA : 32Hz) and the input current is less than 0.5A, carry out abnormal adjustment.
Page 68: Forced Operation Mode
Si04-703A Control Specification Detail Judgment by Input Current When an output frequency is exceeds 55 Hz (40Hz for 71-90 class) and the input current is less than specified value, the adjustment is made for insufficient gas. Judgment by Discharge Pipe Temperature When discharge pipe temperature is 20~60°C (depending on the model or mode) higher than target value and the electronic expansion value opening is 450~480 pulse (max.), the adjustment is made for insufficient gas.
Page 69 Control Specification Si04-703A Function and Control...
Page 70: Part 5 Operation Manual
Si04-703A Part 5 Operation Manual 1. System Configuration................60 2. Instruction....................61 2.1 Safety Precautions .................61 2.2 Names of Parts..................63 2.3 Preparation Before Operation ..............66 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........69 2.5 Adjusting the Airflow Direction..............71 2.6 POWERFUL Operation ................73 2.7 OUTDOOR UNIT QUIET Operation............74 2.8 HOME LEAVE Operation ...............75...
Page 71: System Configuration
System Configuration Si04-703A 1. System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.
Page 72: Instruction
• Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.
Page 73: Installation Site
Instruction Si04-703A • Do not block air inlets nor outlets. Impaired air flow may result in insufficient performance or trouble. • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. •...
Page 74: Names Of Parts
Si04-703A Instruction Names of Parts Names of parts Indoor Unit Operation Manual...
Page 75: Outdoor Unit
Instruction Si04-703A Outdoor Unit 50/60 class 71/80/90 class Indoor Unit 1. Air filter 14. HOME LEAVE lamp (red): • Lights up when you use HOME LEAVE 2. Titanium Apatite Photocatalytic Operation. (page 16.) Air-Purifying Filter 15. Indoor Unit ON/OFF switch: 3.
Page 76: Remote Controller
Si04-703A Instruction Remote Controller CANCEL TIMER < > ARC433B70, 71 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation (page 15.) 2. Display: 9. FAN setting button: • It displays the current settings. •...
Page 77: Preparation Before Operation
Instruction Si04-703A Preparation Before Operation Preparation Before Operation To set the batteries Position – correctly! 1. Slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
Page 78 Si04-703A Instruction Preparation Before Operation To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate. •...
Page 79 Instruction Si04-703A To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display.
Page 80: Auto · Dry · Cool · Heat · Fan Operation
Si04-703A Instruction AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
Page 81: To Change The Airflow Rate Setting
Instruction Si04-703A To change the airflow rate setting 5. Press “FAN setting button”. DRY mode AUTO or HEAT or COOL or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ”...
Page 82: Adjusting The Airflow Direction
Si04-703A Instruction Adjusting the Airflow Direction Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing.
Page 83 Instruction Si04-703A To 3-D Airflow 1. 3. Press the “SWING button ” and the “SWING button ”: the “ ” and “ ” display will light up and the flap and louvers will move in turn. To cancel 3-D Airflow 2.
Page 84: Powerful Operation
Si04-703A Instruction POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation.
Page 85: Outdoor Unit Quiet Operation
Instruction Si04-703A OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
Page 86: Home Leave Operation
Si04-703A Instruction HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button”. • “ ” is displayed on the LCD. •...
Page 87 Instruction Si04-703A What’s the HOME LEAVE operation? Is there a set temperature and airflow rate which is most comfortable, a set temperature and airflow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and airflow rate.
Page 88: Intelligent Eye Operation
Si04-703A Instruction INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 2.
Page 89 Instruction Si04-703A “INTELLIGENT EYE” is useful for Energy Saving. Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
Page 90: Timer Operation
Si04-703A Instruction 2.10 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
Page 91: To Use On Timer Operation
Instruction Si04-703A To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time (page 9.). 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 92: Care And Cleaning
Si04-703A Instruction 2.11 Care and Cleaning Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, outdoor unit and remote controller 1. Wipe them with dry soft cloth. Front panel 1.
Page 93: Air Filter
Instruction Si04-703A Filters 1. Open the front panel. (page 24.) 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium tabs (3 at top) Apatite Photocatalytic Air-Purifying Filter.
Page 94: Before A Long Idle Period
Si04-703A Instruction NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
Page 95: Troubleshooting
Instruction Si04-703A 2.12 Troubleshooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...
Page 96 Si04-703A Instruction Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off.) •...
Page 97: Disposal Requirements
Instruction Si04-703A Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.
Page 98: Part 6 Service Diagnosis
Si04-703A Part 6 Service Diagnosis 1. Caution for Diagnosis................88 2. Problem Symptoms and Measures ............89 3. Service Check Function ................90 4. Troubleshooting ..................93 4.1 Error Codes and Description ..............93 4.2 Indoor Unit PCB Abnormality ..............94 4.3 Freeze-up Protection Control or High Pressure Control......95 4.4 Fan Motor (DC Motor) or Related Abnormality........97 4.5 Thermistor or Related Abnormality (Indoor Unit)........99 4.6 Signal Transmission Error (between Indoor and Outdoor Unit) ...100...
Page 99: Caution For Diagnosis
Caution for Diagnosis Si04-703A 1. Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
Page 100: Problem Symptoms And Measures
Si04-703A Problem Symptoms and Measures Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page None of the units operates. Check the power supply. Check to make sure that the rated voltage is — supplied. Check the type of the indoor units. Check to make sure that the indoor unit type is —...
Page 101: Service Check Function
Service Check Function Si04-703A Service Check Function In the ARC433 series remote controller, the temperature display sections on the main unit indicate corresponding codes. 1. When the timer cancel button is held down for 5 seconds, a “ 00 ” indication flashes on the Check Method 1 temperature display section.
Page 102 Si04-703A Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP▲,TEMP▼, MODE) simultaneously. (R4272) The digit of the number of tens blinks. ★ Try again from the start when the digit does not blink. (R4273) 2.
Page 103 Service Check Function Si04-703A 5. Press the TEMP button. Press TEMP▲ or TEMP▼ and change the digit until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The both numbers of tens and units do not accord with the error code. ★...
Page 104: Troubleshooting
Si04-703A Troubleshooting Troubleshooting Error Codes and Description Reference Code Indication Description Page System — Normal U0★ Insufficient gas Low-voltage detection or over-voltage detection Signal transmission error (between indoor and outdoor units) Indoor Indoor unit PCB abnormality Unit Freeze-up protection control or high pressure control Fan motor or related abnormality Heat exchanger thermistor abnormality Room temperature thermistor abnormality...
Page 105: Indoor Unit Pcb Abnormality
Troubleshooting Si04-703A Indoor Unit PCB Abnormality Remote Controller Display Method of Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Detection Malfunction When there is no zero-cross detection in approximately 10 continuous seconds. Decision Conditions Supposed Faulty indoor unit PCB Causes Faulty connector connection Troubleshooting...
Page 106: Freeze-Up Protection Control Or High Pressure Control
Si04-703A Troubleshooting Freeze-up Protection Control High Pressure Control Remote Controller Display Method of High pressure control (heat pump model only) Malfunction During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection The freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
Page 107 Troubleshooting Si04-703A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Check the air passage. Refer to P.132 Is there any short-circuit? Provide sufficient air passage. Check the intake air filter. Is it very dirty? Clean the air filter.
Page 108: Fan Motor (Dc Motor) Or Related Abnormality
Si04-703A Troubleshooting Fan Motor (DC Motor) or Related Abnormality Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
Page 109 Troubleshooting Si04-703A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off power supply Refer to P.130 and rotate fan by hand. Does fan rotate Replace fan motor. smoothly? Turn power ON and operate fan.
Page 110: Thermistor Or Related Abnormality (Indoor Unit)
Si04-703A Troubleshooting Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation ∗...
Page 111: Signal Transmission Error (Between Indoor And Outdoor Unit)
Troubleshooting Si04-703A Signal Transmission Error (between Indoor and Outdoor Unit) Remote Controller Display Method of The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Detection Malfunction When the data sent from the outdoor unit cannot be received normally, or when the content of the data is abnormal.
Page 112 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.10 Check the indoor unit-outdoor unit Refer to P.135 connection wires. Is there any wiring error? Correct the indoor unit-outdoor unit connection wires.
Page 113: Outdoor Unit Pcb Abnormality
Troubleshooting Si04-703A Outdoor Unit PCB Abnormality Remote Controller Display Method of Detect within the programme of the microcomputer that the programme is in normal running order. Malfunction Detection Malfunction When the programme of the microcomputer is in abnormal running order. Decision Conditions Supposed...
Page 114: Ol Activation (Compressor Overload)
Si04-703A Troubleshooting OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the compressor OL is activated twice, the system will be shut down. The error counter will reset itself if this or any other error does not occur during the following Decision 60-minute compressor running time (total time).
Page 115: Compressor Lock
Troubleshooting Si04-703A Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the Malfunction position detection circuit. Detection Malfunction Judging from current waveform generated when high-frequency voltage is applied to the compressor.
Page 116: Dc Fan Lock
Si04-703A Troubleshooting 4.10 DC Fan Lock Remote Controller Display Method of A fan motor or related error is detected by checking the high-voltage fan motor rpm being Malfunction detected by the Hall IC. Detection Malfunction The fan does not start in 30 seconds even when the fan motor is running. The system will be shut down if the error occurs 16 times.
Page 117: Input Over Current Detection
Troubleshooting Si04-703A 4.11 Input Over Current Detection Remote Controller Display Method of An input over-current is detected by checking the input current value being detected by CT with Malfunction the compressor running. Detection Malfunction The following CT input with the compressor running continues for 2.5 seconds. CT input : Above 20 A Decision The system will be shut down if the error occurs 16 times.
Page 118 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and Refer to P.133 reconnected for part replacement, for example, and the system is interrupted by an input over-current, check the wires again.
Page 119: Four Way Valve Abnormality
Troubleshooting Si04-703A 4.12 Four Way Valve Abnormality Remote Controller Display Method of The room temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor Malfunction temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they function within their normal ranges in the operating mode. Detection Malfunction A following condition continues over 1 minute after operating 10 minutes.
Page 120 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.05 Refer to P.131 Four way valve coil Correct. disconnected (loose)? Check No.06 Refer to P.132 Harness out of connector? Reconnect.
Page 121: Discharge Pipe Temperature Control
Troubleshooting Si04-703A 4.13 Discharge Pipe Temperature Control Remote Controller Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the Malfunction temperature being detected by the discharge pipe thermistor. Detection Malfunction If a stop takes place 6 times successively due to abnormal discharge pipe temperature, the system will be shut down.
Page 122: High Pressure Control In Cooling
Si04-703A Troubleshooting 4.14 High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the Malfunction temperature being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 65°C.
Page 123 Troubleshooting Si04-703A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.130 Check the installation space. Check No.06 Check No. 07 Abnormal Change the air outlet grille Refer to P.132 Check the installation position.
Page 124: Compressor Sensor System Abnormality
Si04-703A Troubleshooting 4.15 Compressor Sensor System Abnormality Remote Controller Display Method of Fault condition is identified by the supply voltage and the DC voltage which is detected before the compressor startup. Malfunction Fault condition is identified by compressor current which is detected right after the Detection compressor startup.
Page 125 Troubleshooting Si04-703A Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn off the power Reactor connection check Connection OK? Connect properly. Compressor connection check Connection OK? Connect properly. Disconnect the reactor from the outdoor unit PCB and measure the resistance Reactor check...
Page 126: Position Sensor Abnormality
Si04-703A Troubleshooting 4.16 Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.
Page 127: Ct Or Related Abnormality
Troubleshooting Si04-703A 4.17 CT or Related Abnormality Remote Controller Display Method of A CT or related error is detected by checking the compressor running frequency and CT- Malfunction detected input current. Detection Malfunction The compressor running frequency is below 55 Hz and the CT input is below 0.1 V. (The input current is also below 0.5 A.) Decision If this error repeats 4 times, the system will be shut down.
Page 128 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.12 Turn off the power and turn it on Refer to P.136 again. Get the system started. ∗...
Page 129: Thermistor Or Related Abnormality (Outdoor Unit)
Troubleshooting Si04-703A 4.18 Thermistor or Related Abnormality (Outdoor Unit) P4 , J3 , J6 , H9 Remote Controller Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. Malfunction [A thermistor error is detected by checking the temperature.] Detection Malfunction The thermistor input is above 4.96 V or below 0.04 V with the power on.
Page 130 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Refer to P.132 Turn on the power again. Error displayed Reconnect. again on remote controller? Connector or thermistor Reconnect.
Page 131: Electrical Box Temperature Rise
Troubleshooting Si04-703A 4.19 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above 95°C. (Reset is made when the temperature drops below 80°C.) Decision Conditions...
Page 132 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 WARNING Turn off the power and turn it on Refer to P.133 again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 95˚C and stops itself when...
Page 133: Radiation Fin Temperature Rise
Troubleshooting Si04-703A 4.20 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor on. Detection Malfunction If the radiation fin temperature with the compressor on is above 105°C, The error is cleared when the temperature drops below 99°C.
Page 134 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn off the power and turn it on Check No.07 again to get the system started. Refer to P.133 Check No.09 Refer to P.134 Error displayed again?
Page 135: Output Over Current Detection
Troubleshooting Si04-703A 4.21 Output Over Current Detection Remote Controller Display Method of An output over-current is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
Page 136 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and Refer to P.133 reconnected for part replacement, for example, and the system is interrupted by an input over-current, check the wires again.
Page 137: Insufficient Gas
Troubleshooting Si04-703A 4.22 Insufficient Gas Remote Controller Display Method of Gas shortage detection I : Malfunction A gas shortage is detected by checking the CT-detected input current value and the compressor running frequency. Detection Gas shortage detection II : A gas shortage is detected by checking the difference between indoor unit heat exchanger temperature and room temperature as well as the difference between outdoor unit heat exchanger temperature and room temperature.
Page 138 Si04-703A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.130 Any thermistor Replace in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor Check No.06 * Room temperature thermistor * Outdoor air thermistor...
Page 139: Low-Voltage Detection Or Over-Voltage Detection
Troubleshooting Si04-703A 4.23 Low-voltage Detection or Over-voltage Detection Remote Controller Display Method of An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage Malfunction detection circuit. Detection Malfunction An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer, or the voltage being detected by the DC voltage detection circuit is judged to be below 150 V Decision for 0.1 second.
Page 140: Signal Transmission Error On Outdoor Unit Pcb
Si04-703A Troubleshooting 4.24 Signal Transmission Error on Outdoor Unit PCB Remote Controller Display Method of Communication error between microcomputer mounted on the main microcomputer and PM1. Malfunction Detection Malfunction When the data sent from the PM1 can not be received successively for 9 sec. The abnormality is determined if the above fault conditions occurs once.
Page 141: Check
Check Si04-703A 5. Check How to Check 5.1.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.
Page 142: Four Way Valve Performance Check
Si04-703A Check 5.1.3 Four Way Valve Performance Check Check No.05 Turn off the power and turn it on again. ∗ Four way valve coil Start the heating-mode run. Cooling / dry : No continuity Heating : Continuity voltage at DC 220- Replace the outdoor unit 240 V with compressor PCB.
Page 143: Thermistor Resistance Check
Check Si04-703A 5.1.4 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.
Page 144: Installation Condition Check
Si04-703A Check 5.1.5 Installation Condition Check Check No.07 Installation condition check Check the Abnormal allowable dimensions Change the position of the air of the air suction and discharge grille or the discharge area. installation location. Normal Does the discharged air from other outdoor unit cause an Change the position of the air increase of the suction...
Page 145: Discharge Pressure Check
Check Si04-703A 5.1.6 Discharge Pressure Check Check No.08 Discharge pressure check Replace the compressor. High Is the stop valve open? Open the stop valve. Is the connection pipe Replace the pipe installed at deformed? the site. Dirty Are the heat exchanger Clean.
Page 146: Power Supply Waveforms Check
Si04-703A Check 5.1.8 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between pins 1 and 2 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...
Page 147: Capacitor Voltage Check
Check Si04-703A 5.1.10 Capacitor Voltage Check Check No.12 Before this checking, be sure to check the main circuit for short-circuit. Checking the capacitor voltage With the circuit breaker still on, measure the voltage according to the drawing of the model in question.
Page 148: Main Circuit Electrolytic Capacitor Check
Si04-703A Check 5.1.12 Main Circuit Electrolytic Capacitor Check Check No.14 Checking the main circuit electrolytic capacitor Never touch any live parts for at least 10 minutes after turning off the circuit breaker. If unavoidably necessary to touch a live part, make sure there is no DC voltage using the tester.
Page 149 Check Si04-703A Service Diagnosis...
Page 150: Part 7 Removal Procedure
Si04-703A Part 7 Removal Procedure 1. Indoor Unit...................140 1.1 Removal of Air Filter / Front Panel ............140 1.2 Removal of Front Grille ................143 1.3 Removal of Horizontal Blades / Vertical Blades ........145 1.4 Removal of Electrical Box / PCB / Swing Motor ........147 1.5 Removal of Heat Exchanger ..............153 1.6 Removal of Fan Rotor / Fan Motor............156 2.
Page 151: Indoor Unit
Indoor Unit Si04-703A 1. Indoor Unit Removal of Air Filter / Front Panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Features Room temperature sensor (thermistor) (R6699) When the...
Page 152 Si04-703A Indoor Unit Step Procedure Points 3. Remove an “titanium apatite photocatalytic air purifying filter”. Push up the bottom of The right and left filters are an air purifying filter to interchangeable. undo the hooks (2 on lower, 3 on upper) and take the filter out.
Page 153 Indoor Unit Si04-703A Step Procedure Points 4. Remove the front panel. While opening the front panel further than it stops, release both axes and remove the front panel. Slide the front panel side to side to release each axis. Align the right and left axes with grooves in turn and insert them to the end when installing.
Page 154: Removal Of Front Grille
Si04-703A Indoor Unit Removal of Front Grille Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the service cover. Loosen the screw and remove the service cover by the knob.
Page 155 Indoor Unit Si04-703A Step Procedure Points Undo the 3 hooks on The front grille has 3 hooks the top of the front on the center and the both grille. sides of the upper part. Refer to the removal procedure in a reverse way when reassembling.
Page 156: Removal Of Horizontal Blades / Vertical Blades
Si04-703A Indoor Unit Removal of Horizontal Blades / Vertical Blades Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the horizontal blades. Open the horizontal It has no fixing screws inside blades.
Page 157 Indoor Unit Si04-703A Step Procedure Points 2. Remove the vertical blades. Undo the right and left pivots. Undo the 3 hooks. Pull the vertical blades rightwards and remove (R6706) Removal Procedure...
Page 158: Removal Of Electrical Box / Pcb / Swing Motor
Si04-703A Indoor Unit Removal of Electrical Box / PCB / Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the front grille. Parts layout 2.
Page 159 Indoor Unit Si04-703A Step Procedure Points 4. Remove the electrical box. Disconnect the 4 You can remove the connection wirings. electrical box without Loosen the screw and detaching the terminal strip remove the terminal board. strip board. Screw: M4×25 Disconnect the connectors for motor (S1).
Page 160 Si04-703A Indoor Unit Step Procedure Points Dislocate the electrical The electrical box has a box to the left and undo hook on its back. the back hook. Pull the electrical box Catch the back hook of the out towards you. electrical box when reassembling.
Page 161 Indoor Unit Si04-703A Step Procedure Points Press the receiver units Release the hooks on the down and undo the upper side. hooks on the upper side, and then undo the hooks on the lower side. Cut the clamp. The receiver units Remove the receiver units contain 4 PCBs.
Page 162 Si04-703A Indoor Unit Step Procedure Points 5. Remove the control PCB. Undo the 2 hooks on the lower side, and then the 2 hooks on the upper side. Remove the control PCB. Control PCB (indoor unit) S1: connector for the fan motor S21: S26: connector for...
Page 163 Indoor Unit Si04-703A Step Procedure Points 7. Remove the swing motor for vertical blades. Release the swing axis Releasing the swing axis on the right side. Loosen the 2 screws and detach the swing motor assembly. Loosen the 2 screws 6 hooks hold the assembly.
Page 164: Removal Of Heat Exchanger
Si04-703A Indoor Unit Removal of Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical Caution box. If gas leaks, repair the spot of 1.
Page 165 Indoor Unit Si04-703A Step Procedure Points 2. Remove the indoor unit. Detach the indoor unit from the installation plate. 3. Remove the piping fixture. Release the hook on the upper side of the piping fixture on the back of the unit. 4.
Page 166 Si04-703A Indoor Unit Step Procedure Points Release the hooks on the left side. Push the fixing hooks on the right side and release. Pull the heat exchanger Caution to the front side and When removing or undo the hooks reinstalling heat exchanger, completely, and then lift be sure to wear protective gloves or wrap the heat...
Page 167: Removal Of Fan Rotor / Fan Motor
Indoor Unit Si04-703A Removal of Fan Rotor Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side panel. Loosen the 2 screws. You can remove the fan rotor without detaching the right side panel.
Page 168 Si04-703A Indoor Unit Step Procedure Points 3. Remove the motor. Remove the fan rotor. Reassembling the fan motor (1) When reassembling the fan rotor, provide as much as 5mm of play between the side face of the rotor and the bottom frame.
Page 169: Outdoor Unit
Outdoor Unit Si04-703A 2. Outdoor Unit RKS 50-71 FVM, RKS 71 GVMG, RK(X)S 50/60 FVMA, RK(X)S 50-71 FVLT 2.1.1 Removal of the Panels and Plates Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
Page 170 Si04-703A Outdoor Unit Step Procedure Points The front grille has 4 hooks. Slide the discharge grille upwards and remove it. Loosen the 6 screws of front panel. Push the front panel and undo the hooks. Lift the clamp plate remove it. Removal Procedure...
Page 171 Outdoor Unit Si04-703A Step Procedure Points Undo the left side Lift the front panel and hooks, and then the remove it while pushing the right side hook. left side panel inwards. Remove the front panel. Lift the front panel and undo the right side hook.
Page 172 Si04-703A Outdoor Unit Step Procedure Points 2. Remove the stop valve cover. Loosen the screw of the stop valve cover. Pull down the stop valve cover to undo the hooks and remove it. The stop valve cover has 6 hooks. (R5254) Removal Procedure...
Page 173 Outdoor Unit Si04-703A 2.1.2 Removal of the Fan Motor / Propeller Fan Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel and the front panel. Shelter 1.
Page 174 Si04-703A Outdoor Unit Step Procedure Points 2. Remove the fan motor. Disconnect the connector for fan motor (S70). The illustration shows arrangement of the fan motor lead wire. Removal Procedure...
Page 175 Outdoor Unit Si04-703A Step Procedure Points Unscrew the washer- fitted nut (M10) of the propeller fan with a spanner. Align mark of the propeller fan with D-cut section of the motor shaft when reassembling. Remove the 4 screws from the motor.
Page 176 Si04-703A Outdoor Unit Step Procedure Points Pull the fan motor out. Put the lead wire through the back of the motor when reassembling (so as not to be entangled with the propeller fan). (R5265) Removal Procedure...
Page 177 Outdoor Unit Si04-703A 2.1.3 Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel and the front panel. 1. Remove the shield plate.
Page 178 Si04-703A Outdoor Unit Step Procedure Points Disconnect the 2 earth wires. Loosen the 3 screws of right side panel. Loosen the fixing screw of the electrical box. Removal Procedure...
Page 179 Outdoor Unit Si04-703A Step Procedure Points Insert the 2 hooks of the lower part and the 1 hook of the upper back when Hook reassembling. (R5272) Hooks (R5273) Disconnect the connectors of the front side. S20: electronic expansion valve S40: overload protector S80: four way valve S90: thermistors (discharge pipe,...
Page 180 Si04-703A Outdoor Unit Step Procedure Points Release the clamp by 71 class only. pliers. (R5277) Release the clamp and undo the wire from the hook. Lift the electrical box and remove it. Removal Procedure...
Page 181: Removal Of The Pcb
Outdoor Unit Si04-703A 2.1.4 Removal of the PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical box. 1. Remove the PCB. Disconnect the connectors for the control PCB (S52, S102).
Page 182 Si04-703A Outdoor Unit Step Procedure Points Undo the hook on the right. Open the cable way board. Disconnect the 1: Black harnesses. 2: White 3: Red L1: Black L2: Brown N1: White N2: Blue Disconnect the 2 harnesses for the reactor (HR1, HR2).
Page 183 Outdoor Unit Si04-703A Step Procedure Points Loosen the 3 fixing screws for the main PCB. Undo the 4 hooks. Lift up and remove the PCB. Removal Procedure...
Page 184: Removal Of The Sound Blanket
Si04-703A Outdoor Unit 2.1.5 Removal of the Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the sound blanket (back). Remove the sound Since the piping ports on the blanket (outer).
Page 185 Outdoor Unit Si04-703A Step Procedure Points Remove the sound blanket (top-lower). Remove the sound Since the piping ports on the blanket (inner). sound blanket (inner) are torn easily, remove the blanket carefully. Release the discharge Pay attention to the direction pipe thermistor.
Page 186: Removal Of The Four Way Valve
Si04-703A Outdoor Unit 2.1.6 Removal of the Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the screw of the Provide a protective sheet or four way valve coil.
Page 187: Removal Of The Electronic Expansion Valve
Outdoor Unit Si04-703A 2.1.7 Removal of the Electronic Expansion Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electronic In case of 50/60 class heat expansion valve coil.
Page 188 Si04-703A Outdoor Unit Step Procedure Points Before working, The illustration is different make sure that the depending on the models. refrigerant is empty in the circuit. Caution Heat up the 2 brazed Be careful about the parts of the electronic electronic expansion valve, expansion valve pipes and so on, which were...
Page 189 Outdoor Unit Si04-703A 2.1.8 Removal of the Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal cover. Disconnect the lead Be careful so as not to burn wires of the the compressor terminals or compressor.
Page 190 Si04-703A Outdoor Unit Step Procedure Points Release the clamp by pliers to detach the wire harness for the compressor. Remove the putty. The illustration is for 50/60 class heat pump models as representative. Before working, make sure that the refrigerant is empty in the circuit.
Page 191 Outdoor Unit Si04-703A Step Procedure Points Unscrew the nut of the compressor. Before working, Warning make sure that the Ventilate when refrigerant refrigerant is empty leaks during the work. in the circuit. (If refrigerant contacts fire, it Be sure to apply will cause to arise toxic gas.) nitrogen replacement when...
Page 192: Rks 71 Fvma, Rxs 71/80/90 Fvma
Si04-703A Outdoor Unit RKS 71 FVMA, RXS 71/80/90 FVMA 2.2.1 Removal of Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points External appearance from front side. (R6368) 1.
Page 193 Outdoor Unit Si04-703A Step Procedure Points Next, slide the grille downward to undo the 3 Hooks top hooks. (R6371) Remove the suction grille. (R6372) 2. Removing the panel. Remove the 4 screws on the back and the screw on the left side panel.
Page 194 Si04-703A Outdoor Unit Step Procedure Points Remove the 2 screws on the front and the screw on the right side panel. (R6374) Lift the top panel and remove it. (R6375) 3. Removing the right side panel. Remove the 5 screws. (R6376) Removal Procedure...
Page 195 Outdoor Unit Si04-703A Step Procedure Points Slide the panel downward to undo 2 hooks on the back side. (R6377) Hooks (R6378) Hooks Hook Holes Hook Holes (R6379) Removal Procedure...
Page 196 Si04-703A Outdoor Unit Step Procedure Points Remove the right side panel. (R6983) 4. Removing the front panel Front Panel (2) Remove the 2 screws. Front Panel (1) (R6984) Removal Procedure...
Page 197 Outdoor Unit Si04-703A Step Procedure Points Slide the panel downward to undo the hook. (R6985) (R6383) Remove the front panel (2). (R6986) Removal Procedure...
Page 198 Si04-703A Outdoor Unit Step Procedure Points 5. Removing the front panel Remove the discharge grille propeller fan first to remove the Front Panel (1) front panel (1). Remove the 4 screws on the discharge grille. Discharge grille (R6987) Pull the bottom of the discharge grille toward yourself.
Page 199 Outdoor Unit Si04-703A Step Procedure Points Next, slide the grille downward to undo the 2 hooks at the top. (R6989) Hooks (R6388) Remove the discharge grille. (R6990) Remove the propeller Fan fixing nut : M8 fan fixing nut. (R6991) Removal Procedure...
Page 200 Si04-703A Outdoor Unit Step Procedure Points Remove the 2 fixing screws on the partition plate. (R6992) Remove the screw at bottom left of the front. (R6993) Remove the screw at bottom of the left side. (R6393) Removal Procedure...
Page 201 Outdoor Unit Si04-703A Step Procedure Points Remove the screw at bottom of the back side. (R6394) The front panel (1) is provided with a hook on its front. Lift the front panel off position to remove it. Hook (R6994) Removal Procedure...
Page 202 Si04-703A Outdoor Unit Step Procedure Points Remove the front panel (1). The back is a little complicated in shape. Be sure to detach carefully. (R6995) 6. Removing the rear panel Illustrations are different depending on the models. Remove the fixing screw on the partition plate.
Page 203 Outdoor Unit Si04-703A Step Procedure Points Slide the panel leftward to undo the hook, and remove the partition plate. Hook (R6997) Remove the 3 screws. (R6998) Remove the wire fixing plate. (R6999) Removal Procedure...
Page 204 Si04-703A Outdoor Unit Step Procedure Points Undo the holder of the The holder is secured in the thermistor. clearances of the heat exchanger fins. (R6403) Groove (R6404) Remove the 3 fixing screws on the partition plate. (R7000) Removal Procedure...
Page 205 Outdoor Unit Si04-703A Step Procedure Points Remove the fixing screw from the bottom frame. (R6406) (R7001) Remove the fixing screw from the shut-off valve mounting plate. (R7002) Lift the panel upward to undo the 2 hooks and remove it. Hooks Hooks (R7003) Removal Procedure...
Page 206 Si04-703A Outdoor Unit Step Procedure Points Remove the rear panel. (R7004) Removal Procedure...
Page 207: Removal Of The Electrical Box
Outdoor Unit Si04-703A 2.2.2 Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the fixing screw from the shut-off valve mounting plate. (R7005) Remove the fixing screw on the partition...
Page 208 Si04-703A Outdoor Unit Step Procedure Points Disconnect the connector for fan motor (S70). The illustration shows arrangement of the fan motor lead wire. Disconnect the connectors of the front side. S20: electronic expansion valve S40: overload protector S80: four way valve S90: thermistors (discharge pipe, outdoor air,...
Page 209 Outdoor Unit Si04-703A Step Procedure Points Remove the OL wire harness and the compressor wire harness together from the partition. Clamp (R6422) Use long-nose pliers or Detach the clamp. the like to pull out the Just pull the push-mount clamp. type out of position.
Page 210 Si04-703A Outdoor Unit Step Procedure Points 10 First, slide the box leftward to undo the hook on the right side of the box. (R7009) 11 Lift up the electrical box to remove it. (R7010) Removal Procedure...
Page 211 Outdoor Unit Si04-703A 2.2.3 Removal of the PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical box. 1. Remove the PCB. Disconnect the connectors for the control PCB (S52, S102).
Page 212 Si04-703A Outdoor Unit Step Procedure Points Undo the hook on the right. Open the cable way board. Disconnect the 1: Black harnesses. 2: White 3: Red L1: Black L2: Brown N1: White N2: Blue Disconnect the 2 harnesses for the reactor (HR1, HR2).
Page 213 Outdoor Unit Si04-703A Step Procedure Points Loosen the 3 fixing screws for the main PCB. Undo the 4 hooks. Lift up and remove the PCB. Removal Procedure...
Page 214: Removal Of Fan Motor
Si04-703A Outdoor Unit 2.2.4 Removal of Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 screws Be sure to remove the bottom at the bottom first.
Page 215 Outdoor Unit Si04-703A 2.2.5 Removal of Coils / Thermistors Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the motorized Illustrations are different valve coil depending on the models.
Page 216 Si04-703A Outdoor Unit Step Procedure Points Slightly open the sound blanket. (R7011) Remove the sound blanket (top upper). (R7012) Remove the discharge pipe thermistor. (R6455) Removal Procedure...
Page 217 Outdoor Unit Si04-703A Step Procedure Points Remove the fixture. (R6456) 3. Removing the Four way valve coil and motorized valve coil Remove the screw. (R6457) Remove the Four way valve coil. (R6458) Removal Procedure...
Page 218: Removal Of Sound Blanket
Si04-703A Outdoor Unit 2.2.6 Removal of Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Undo the 2 Velcro tapes off the sound blanket, and open the sound blanket (outer sleeve).
Page 219 Outdoor Unit Si04-703A Step Procedure Points Remove the sound The sound blanket is fragile. blanket (outer sleeve). Be careful of the notches of the compressor mount (3 locations). (R7016) Remove the sound The sound blanket is fragile. blanket (top lower). Carefully pass the discharge pipe through it.
Page 220 Si04-703A Outdoor Unit Step Procedure Points Remove the sound blanket (outer sleeve). (R7019) Removal Procedure...
Page 221: Removal Of Compressor
Outdoor Unit Si04-703A 2.2.7 Removal of Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal cover. (R7020) Pull out the 3 leads U:red, V:yellow, W:blue using long-nose pliers.
Page 222: Part 8 Others
Si04-703A Part 8 Others 1. Others ....................212 1.1 Test Run from the Remote Controller ..........212 1.2 Jumper Settings ...................213 1.3 Application of Silicon Grease to a Power Transistor and a Diode Bridge..................214 Others...
Page 223: Others
Others Si04-703A 1. Others Test Run from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. Trial operation may be disabled in either mode depending on the room temperature. After trial operation is complete, set the temperature to a normal level.
Page 224: Jumper Settings
Si04-703A Others Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the front grille.
Page 225: Application Of Silicon Grease To A Power Transistor And A Diode Bridge
Others Si04-703A Application of Silicon Grease to a Power Transistor Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner. Models When the printed circuit board of an outdoor unit is replaced, it is required that silicon grease (*1) is certainly applied to the heat radiation part (the contact point to the heat radiation fin) of the power transistor and diode bridge.
Page 226: Part 9 Appendix
Si04-703A Part 9 Appendix 1. Piping Diagrams..................216 1.1 Indoor Units ..................216 1.2 Outdoor Units ..................217 2. Wiring Diagrams..................221 2.1 Indoor Units ..................221 2.2 Outdoor Units ..................222 Appendix...
Page 227: Piping Diagrams
Piping Diagrams Si04-703A Piping Diagrams Indoor Units 1.1.1 Cooling Only FTKS50/60FVM, FTKS50/60FVMA FTKS71FVM, FTKS71FVMA FTKS50/60FVLT FTKS71FVLT INDOOR UNIT INDOOR UNIT (7.9CuT) ( 7.9CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR ON HEAT EXCH. ON HEAT EXCH. CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING FIELD PIPING (6.4CuT)
Page 228: Outdoor Units
Si04-703A Piping Diagrams Outdoor Units 1.2.1 Cooling Only RKS50/60FVM, RKS50/60FVMA, RKS50/60FVLT OUTDOOR UNIT HEAT EXCHANGER 7.9CuT OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 4.0CuT 7.9CuT MUFFLER WITH 7.9CuT 4.0CuT 7.9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.4CuT 7.9CuT COOLING...
Page 229 Piping Diagrams Si04-703A RKS71FVMA OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE 7.9CuT THERMISTOR 7.9CuT HEADER 7.9CuT 7.9CuT 7.9CuT 7.9CuT 7.9CuT HEAT EXCHANGER(CONDENSER) THERMISTOR 7.9CuT RECEIVER 4.0CuT 7.9CuT 9.5CuT 9.5CuT 9.5CuT 9.5CuT 9.5CuT FILTER MOTOR FILTER DISTRIBUTOR DC FAN MOTOR OPERATED VALVE CAPILLARY TUBE PROPELLER FAN 4-WAY...
Page 230 Si04-703A Piping Diagrams 1.2.2 Heat Pump RXS50/60FVMA, RXS50/60FVLT OUTDOOR UNIT 7.9CuT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 4.0CuT MUFFLER 7.9CuT WITH 7.9CuT 4.0CuT 7.9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.4CuT 7.9CuT COOLING CAPILLARY TUBE 3...
Page 231 Piping Diagrams Si04-703A RXS71FVLT OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE 7.9CuT THERMISTOR 7.9CuT 7.9CuT 7.9CuT 12.7CuT CAPILLARY TUBE 1 7.9CuT 7.9CuT 4.0CuT 7.9CuT MUFFLER 7.9CuT 4.0CuT WITH REFRIGERANT FLOW 7.9CuT FILTER CAPILLARY TUBE 2 6.4CuT COOLING 7.9CuT CAPILLARY TUBE 3 4.0CuT HEATING HEAT...
Page 232: Wiring Diagrams
Si04-703A Wiring Diagrams Wiring Diagrams Indoor Units FTKS50/60/71FVM, FTKS50/60/71FVMA FTXS50/60/71/80/90FVMA FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A OUTDOOR ° CAUTION TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF PCB4 THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN. LED1 LED2 LED3...
Page 233: Outdoor Units
Wiring Diagrams Si04-703A Outdoor Units 2.2.1 Cooling Only RKS50/60FVM, RKS50/60FVMA, RKS50/60FVLT MRM20 3.15A POWER SUPPLY MRM10 6(P) + + + 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL S101 indoor FIELD WIRING t° t° t° S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor Z1C ~ Z4C...
Page 234 Si04-703A Wiring Diagrams RKS71FVMA 3.15A MRM20 V100 POWER SUPPLY MRM10 6(P) 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL S101 indoor FIELD WIRING t° t° t° S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor Z1C~Z7C : FERRITE CORE X1M,X2M : TERMINAL STRIP MRM10,MRM20 : ELECTRONIC EXPANSION VALVE COIL MRC/W...
Page 235 Wiring Diagrams Si04-703A 2.2.2 Heat Pump RXS50/60FVMA, RXS50/60FVLT MRM20 3.15A POWER SUPPLY MRM10 6(P) + + + 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL S101 indoor FIELD WIRING t° t° t° S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor Z1C ~ Z4C : FERRITE CORE X1M, X2M...
Page 236 Si04-703A Wiring Diagrams RXS71FVLT X12A MRM20 3.15A V100 POWER SUPPLY MRM10 6(P) + + + 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL S101 indoor FIELD WIRING t° t° t° S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor Z1C~Z7C : FERRITE CORE X1M, X2M : TERMINAL STRIP MRM10, MRM20...
Page 237 Wiring Diagrams Si04-703A Appendix...
Page 238: Index
Si04-703A Index Numerics check No.14 ............137 check No.15 ............137 00 ................93 clamp plate ............159 3-minute standby ..........41, 48 coils ..............204 compressor ......... 178, 180, 210 compressor lock ..........104 A1 ................94 compressor overload ........... 103 A5 ................95 compressor protection function ......
Page 239 Si04-703A F6 ..............111 high pressure control in cooling ......111 H0 ..............113 HOME LEAVE operation ......... 38, 75 H6 ..............115 horizontal blades ..........145 H8 ..............116 hot start function ............ 40 H9 ..............118 HR1 ............... 24 J3 ..............118 HR2 ............... 24 J6 ..............118 L3 ..............120 L4 ..............122...
Page 240 Si04-703A ON/OFF button on indoor unit ........40 S26 ..............22, 151 opening limit ............54 S27 ................ 22 operation lamp ............88 S28 ..............22, 151 outdoor air thermistor ...........119 S29 ................ 22 outdoor heat exchanger thermistor ..42, 43, 119, 174 S32 ..............22, 151 outdoor unit fan system check ......134 S35 ................
Page 241 Si04-703A TIMER operation ............79 titanium apatite photocatalytic air-purifying filter ..40 top panel ............158, 182 troubleshooting ..........84, 93 troubleshooting with the LED indication ....88 turning speed pulse input on the outdoor unit PCB check .............137 U0 .................126 U2 .................128 U4 .................100 U7 .................129 V1 ................22 V100 ...............24...
Page 242 Si04-703A Drawings & Flow Charts Numerics freeze-up protection control or high pressure control ........95 3-D airflow ..............30 frequency control ........... 45 frequency principle ..........28 ARC433 series ............90 automatic airflow control ........31 heating peak-cut control ........50 automatic operation ..........33 high pressure control in cooling ......
Page 243 Si04-703A FTXS50/60FVLT ..........216 RXS50/60FVMA ........... 224 FTXS50/60FVMA ..........216 RXS71/80/90FVMA ........224 FTXS71/80/90FVMA ........216 RXS71FVLT ..........225 FTXS71FVLT ..........216 RKS50/60FVLT ..........217 RKS50/60FVM ..........217 RKS50/60FVMA ..........217 RKS71FVLT ..........217 RKS71FVM ............217 RKS71FVMA ..........218 RKS71GVMG ..........217 RXS50/60FVLT ..........219 RXS50/60FVMA ..........219 RXS71/80/90FVMA ........219 RXS71FVLT ..........220 position sensor abnormality .........115 power supply waveforms check ......135 power transistor ............214...
Page 244 Specifications, designs and other content appearing in this brochure are current as of May 2008 but subject to change without notice. Si 04-703A Printed in Japan 05/2008 B AK...

Daikin F-Series Service Manual

Part 1 List of Functions

Part 2 Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Part 4 Function and Control

Part 5 Operation Manual

Part 6 Service Diagnosis

Part 7 Removal Procedure

Part 8 Others

Part 9 Appendix

Index

Quick Links

Troubleshooting

Need help?

Questions and answers

Related Manuals for Daikin F-Series

Summary of Contents for Daikin F-Series

This manual is also suitable for:

Table of Contents