Page 1 Floating Air Pro Series ® Ductless Split Air Conditioners Multi-Zone R-410A Refrigerant Type Model Model Revision Outdoor Condensor FPHMR18A3A Outdoor Condensor FPHMR24A3A Outdoor Condensor FPHMR36A3A Outdoor Condensor FPHMR42A3A Indoor Wall Mount FPMW07A3A FPHMW07A3B WIFI Indoor Cassette FPHFC09A3A FPHFC09A3B WI-FI Indoor...
Page 2: Table Of Contents
TABLE OF CONTENTS Table of Contents INTRODUCTION‑ Important Safety Information‑ Personal Injury Or Death Hazards‑ Personal Injury Or Death Hazards‑ Model Identification Guide‑ Product Appearance‑ SPECIFICATIONS‑ Product Specifications Multi‑Zone Wall‑Mounted‑ Product Specifications Multi‑Zone‑Cassette ‑ Product Specifications Multi‑Zone Concealed Ducted ‑ Product Specifications 18K, 24k and 36k Outdoor Condensor‑...
Page 3 36k Outdoor Units‑ 42k Outdoor Units‑ APPENDIX‑ Reference Sheet of Celsius and Fahrenheit‑ Pipe Expanding Method‑ Resistance Table Coil And Room Sensor‑ Resistance Table Of Outdoor Compressor Temperature Sensor‑ Available Accessories‑ Interactive Parts Viewer‑ Limited Warranty‑ Friedrich Authorized Parts Depots‑...
Page 4: Introduction
INTRODUCTION Important Safety Information The information in this manual is intended for use by a qualified technician who is familiar with the safety procedures required for installation and repair, and who is equipped with the proper tools and test instruments required to service this product.
Page 5 DO NOT OPERATE EQUIPMENT DURING ACTIVE STAGES OF CONSTRUCTION To ensure proper operation, Friedrich requires that all equipment is not operated during active construction phases. This includes active stages of completing framing, drywalling, spackling, sanding, painting, flooring, and moulding in the equipment’s designated conditioning space.
Page 6: Personal Injury Or Death Hazards
INTRODUCTION Personal Injury Or Death Hazards WARNING AVERTISSEMENT ADVERTENCIA SAFETY FIRST Do not remove, disable Ne pas supprime, désactiver No eliminar, desactivar o or bypass this unit’s ou contourner cette l´unité pasar por alto los safety devices. Doing so des dispositifs de sécurité, dispositivos de seguridad de may cause fire, Doing so faire vous risqueriez de...
Page 7 INTRODUCTION Personal Injury Or Death Hazards WARNING AVERTISSEMENT ADVERTENCIA SAFETY FIRST Do not remove, disable or Ne pas supprime, désactiver ou No eliminar, desactivar o bypass this unit’s safety contourner cette l´unité des pasar por alto los dispositivos devices. Doing so may dispositifs de sécurité, faire vous de seguridad de la unidad.
Page 8: Model Identification Guide
INTRODUCTION Model Identification Guide MODEL IDENTIFICATION GUIDE Function : Model Type: HS – H ea t Pump Single Approximate Voltag e FR- Floating Air Premier Coolin g 1- 115 Volts HM – Heat Pump Multi FP - Floating Air Pro HF –...
Page 9: Product Appearance
INTRODUCTION Product Appearance Duct type Model Indoor Unit (Btu/h) 9K/12K 18 K Cassette type Model Indoor Unit (Btu/h) 9K/12K 18K/ 24k...
Page 10 INTRODUCTION Outdoor Unit Product Appearance - Outdoor Units Minimum and Maximum connectabel Capacity (Btu/h) Type View 12,000-36,000 3-Zone Tri 4-Zone Quad 18,000-48,000 5-Zone 24,000-63,000...
Page 11: Specifications
SPECIFICATIONS Product Specifications Multi-Zone Wall-Mounted PERFORMANCE RATINGS Multizone Wall-Mounted - Heat Pumps INDOOR MODEL FPHMW07A3A, FPHFW09A3A, FPHFW12A3A, FPHFW18A3A, FPHFW24A3A, FPHMW07A3B FPHFW09A3B FPHFW12A3B FPHFW18A3B FPHFW24A3B SPECIFICATIONS CAPACITY 7,000 9,000 12,000 18,000 24,000 COOLING (RATED) CAPACITY 8,500 9,500 13,000 19,000 24,200 HEATING (RATED) MOISTURE Pts/h 2.5 REMOVAL...
Page 12: Product Specifications Multi-Zone-Cassette
SPECIFICATIONS Product Specifications Multi-Zone-Cassette PERFORMANCE RATINGS Multizone Cassette - Heat Pumps INDOOR MODEL FPHFC09A3A FPHFC12A3A FPHFC18A3A FPHFC24A3A SPECIFICATIONS CAPACITY COOLING (RATED) 9,000 12,000 18,000 24,000 CAPACITY HEATING (RATED) 10,200 13,500 20,400 27,000 MOISTURE REMOVAL Pts/h AIRFLOW (HIGH) 1100 SOUND RATING (MAX.-MIN.) dB-A 40/28 40/28...
Page 13: Product Specifications Multi-Zone Concealed Ducted
SPECIFICATIONS Product Specifications Multi-Zone Concealed Ducted PERFORMANCE RATINGS Multizone - The Insider™ Concealed Ducted Heat Pumps INDOOR MODEL FPHFD09A3A FPHFD12A3A FPHFD18A3A SPECIFICATIONS CAPACITY COOLING (RATED) 9,000 12,000 18,000 CAPACITY HEATING (RATED) 10,000 12,500 19,000 MOISTURE REMOVAL Pts/h Max Airflow (@0.1 E.S.P.) SOUND RATING (MAX.-MIN.) dB-A 33/26...
Page 14: Product Specifications 18K, 24K And 36K Outdoor Condensor
SPECIFICATIONS Product Specifications 18K, 24k and 36k Outdoor Condensor Multi-Zone Flex 2 Indoor units 2 or 3 indoor units 2 to 4 indoor units 2 to 5 indoor units Model Name FPHMR18A3A FPHMR24A3A FPHMR36A3A FPHMR42A3A R410A R410A R410A R410A Capacity...
Page 15 Product Specifications 18K, 24k and 36k Outdoor Condensor Multi-Zone Flex 2 Indoor units 2 or 3 indoor units 2 to 4 indoor units 2 to 5 indoor units Model Name FPHMR18A3A FPHMR24A3A FPHMR36A3A FPHMR42A3A Dimension & Weight Net Dimension (WxHxD) inch...
Page 16: Product Dimensions: Wall Mounted Indoor Units
SPECIFICATIONS Product Dimensions: Wall Mounted Indoor Units Model Width Height Depth FPHFW07A3A/B 33 7/8 “(Inches) 11 3/16 “(Inches) 8 1/2 “(Inches) FPHFW09A3A/B 33 7/8 “(Inches) 11 3/16 “(Inches) 8 1/2 “(Inches) FPHFW12A3A/B 33 7/8 “(Inches) 11 3/16 “(Inches) 8 1/2 “(Inches) FPHFW18A3A/B 45 3/16 “(Inches) 13 1/8 “(Inches)
Page 17: Product Dimensions: 9K, 12K, And 18K Ducted Indoor Units
SPECIFICATIONS Product Dimensions: 9k, 12k, and 18k Ducted Indoor Units 5-1/4(134) 5(127) 6-11/16(170) 8-3/4(222) Air outlet Air inlet Unit: Inches “ (mm) Air outlet Electric box Air inlet Model ( Btu/ h) 37- 13/16 35- 13/16 29-1/2 9K/12K (961) (910) (749) (786) 48-7/16...
Page 18: Product Dimensions: 9K And 12K Cassette
SPECIFICATIONS Product Dimensions: 9k and 12k Cassette Unit: Inches “ (mm) 24-7/16(620) 12(305) 10-13/16(275) 2-7/16 (62) 22-7/16(570) 20-1/4(515) 2(51) 3-11/16 2-1/16(52) (93) 22-5 /8~23-1/4(575~590) 24-7/16(620)
Page 19: Product Dimensions: 18K And 24K Cassette
SPECIFICATIONS Product Dimensions: 18k and 24k Cassette Unit: Inches “ (mm) 37- 3/8(95 0) (490 ) (478 ) 33-1/16(840) 33-1/8(841) 7-1/8 5-1/8 (180) (130) 4-5/16 (110) 29-7/8(760) 33-7/8~35-13/16(860~910)
Page 20: Product Dimensions: 24K Outdoor Units
SPECIFICATIONS Product Dimensions: 24k Outdoor Units Unit: Inches “ (mm) 7-1/4(185) 22- 7/8(580) 7(180) 37- 3/8(950) 3-1/4(82) 40- 7/8(1032) 13- 9/16(344) 5/8(15) 2-3/4(70)
Page 21: Product Dimensions: 36K Outdoor Units
SPECIFICATIONS Product Dimensions: 36k Outdoor Units 3-7/8(100) 3-7/8(100) 3-1/4(83) 3-7/8(100) 5-1/4(133) 3-7/8(100) 3-7/8(100) 3-7/8(100) 41-5/16(1050) Unit: Inches” (mm) 13- 1/2(349) 37- 3/8(950) 7-1/4(18 5) 22-7/8(580) 13- 9/16(344) 2-3/4(70 ) 5/8(15)
Page 22: Product Dimensions: 42K Outdoor Units
SPECIFICATIONS Product Dimensions: 42k Outdoor Units Unit : Inches “ (mm)
Page 23 SPECIFICATIONS Sound Pressure Data Outdoor Units...
Page 24 SPECIFICATIONS Sound Pressure Data Indoor Ducted Units Units Model Model Test condition 4.6ft(1. 4m) under the unit; 3.3ft(1 .0m) high from the ground Test condition 4.6ft(1.4m) under the unit; 3.3ft(1.0m) high from the ground NC-70 NC-70 NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50...
Page 25 SPECIFICATIONS Sound Pressure Data Cassettes Model Model Test condition 4.6ft(1.4m) from the unit; 3.3ft(1.0m) high from the ground 4.6ft(1.4m) from the unit; 3.3ft(1.0m) high from the ground Test condition NC-70 NC-70 NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 NC-45 NC-45 NC-40 NC-40...
Page 26 SPECIFICATIONS Sound Pressure Data Cassettes Model Test condition 4.6ft(1.4m) from the unit; 3.3ft(1.0m) high from the ground NC-70 NC-65 NC-60 NC-55 NC-50 NC-45 NC-40 NC-35 NC-30 NC-25 NC-20 NC-15 Octave band center frequency(Hz)
Page 27 SPECIFICATIONS Air Flow Distribution 24k Cassette 1) Coo ling/ Air Velocity Distribution 2) Cooling/ Air Temperature Distribution 3) Heating/ Air Velocity Distribution 4) He ating/ Air Temperature Distribution...
Page 28 SPECIFICATIONS ESP (External Static Pressure) chart (Duct Type) 9k Standard E SP Chart ( 0 Pa) 0.24 (60) 0.2 (50) Limit High 0.16(40) Middle 0.12(30) Rated 0.08(20) Middle High 0.04(10) 14 0 21 0 28 0 42 0 (CFM) High E SP Chart (5 0 Pa) 0.4 (100) 0.36 (90) 0.32 (80)
Page 29 SPECIFICATIONS ESP (External Static Pressure) chart (Duct Type) 12k Standard E SP Chart ( 0 Pa) 0.32(80) 0.28 (70) limit Limit 0.24 (60) High 0.2 (50) Middle High 0.16 (40) Middle Rated 0.12 (30) 0.08 (20) 0.04 (10) Rated 14 0 (CFM) High E SP Chart (5 0 Pa) 0.4 (100)
Page 30 SPECIFICATIONS ESP (External Static Pressure) chart (Duct Type) 18k Standard E SP Chart ( 0 Pa) 0.20 (50) 0.18 (45) 0.16 (40) Limit High 0.14 (35) Middle 0.12 (30) 0.10 (25) 0.08 (20) Middle Rated High 0.06 (15) 0.04 (10) 0.02 (5) Airﬂow rate (CFM) High E SP Chart (5 0 Pa)
Page 31 SPECIFICATIONS Refrigerant Cycle 18k and 24k Outdoor Units...
Page 32 SPECIFICATIONS Refrigerant Cycle 36k and 42k Outdoor Units Ambient Temperature Sensor Ambient Temperature Water Level Switch Ambient Temperature Water Level Switch Mufﬂer Liquid Stop Volve High Pressure Ambient Temperature Switch Liquid Temperature Mufﬂer Water Level Switch Sencor 4-Way Valve Pressure Ambient Temperature Switch Suction...
Page 33: Electrical Requirements 24K, 36K, And 42K Outdoor Units
SPECIFICATIONS Electrical Requirements 24k, 36K, AND 42K Outdoor Units 14 AWG 14 AWG 14 AWG 14 AWG...
Page 34 SPECIFICATIONS Electrical Requirements 24k, 36K, AND 42K Outdoor Units (1) Follow local codes and regulations when selecting wire size and breakers IMPORTANT covered part Stranded wire 1. When connecting the terminal block using stranded wire, make Round crimp- style terminal sure to use a round crimp-style terminal for connection to the power supply terminal block.
Page 35: Correction Factors
CORRECTION FACTORS Piping Length Correction Factor Piping length correction factor Pipe length L Indoor unit Height difference H Outdoor unit Th e correction facto r is base d on the equi valent piping length in feet (EL ) and the height between outdoor and indoor units in feet (H).
Page 36: Piping Length Factor Chart
CORRECTION FACTORS Piping Length Factor Chart The correction factor of height between each indoor unit and outdoor unit 16ft(5m) 32.8ft( 10m) 49ft(15m) 66ft(20m ) 82ft(25m ) 98ft(30m ) 0.95 0.88 0.75 To ensure correc t unit selec tion, co nsider the farthest indoo r unit. NOT E : The above data re ects that the minimum height requirements have been meet or exceeded height di erence between the indoor and outdoor unit is based...
Page 37 CORRECTION FACTORS Piping Length Correctiion Factor Correction factors according to defrosting operation The heating capacity in the preceding paragraph excludes the condition of the frost or the or the defrosting operation period. In consideration of the frost or the defrosting operation, the heating capacity is corrected by the equation below.
Page 38: Operation
OPERATION Display Panel D isplay panel C assette Type 5 4 3 D escription 1 Run indicator (Red) It lights on during operation. It lights off during SLEEP mode. 2 Emergency switch The ﬁlter clean indicator is reset when the switch is pressed. The unit will be started or stopped when the switch is pressed.
Page 39 OPERATION Figure 301 Remote Control Operation and Function...
Page 40 OPERATION Remote Technical Parameters Remote receiver distance (front of the air conditioner): 26ft. Remote receiver angle: Less than 60 degrees. Temperature control accuracy: ±2.4°F. Time Response: Less than 1 second. Display Functions Remote Current control functions on the remote controller (See unit’s “Installation and Operating Manual”) Display of the indoor unit displays set temperature or indoor temperature.
Page 41: Using Sleep During Off-Timer Function
OPERATION Sleep mode will cease after 8 hours of operation. Using Sleep during Off-Timer Function When using Sleep mode, if the next OFF-Timer setting less than 8 hours, Sleep mode will remain active until the OFF-Timer setting. If the next OFF-Timer setting more than 8 hours, it will override the OFF-Timer setting and will turn the system off 8 hours after engaging Sleep mode.
Page 42 OPERATION Air flow direction (Louvers) control The louver is operated by a stepper motor and operates the horizontal swing of the louver automatically. Press the SWING button to start or stop the louver swing. During the louver swing in normal operation, the current position will be stored. When the appliance turn off and louver swing automatically to the default position, it will position at the close position plus 5º.
Page 43 OPERATION Dehumidification mode The dehumidifying mode is illustrated as follows: 62˚F Dehumidifying area I: Operation at the frequency in the range (30–60Hz) according to DeltaT (difference between ambient and indoor temperature). Dehumidifying area II: The compressor stops for 5 minutes and operators for 5 minutes at the lowest frequency. Dehumidifying area III: The compressor stops.
Page 44 OPERATION Fan Only Mode Operation In this mode, the compressor and outdoor fan stop, indoor fan operates under the pre-setting of air volume, the louver swing, and the indoor fan speed is defaulted to the current setting in as the Heating Mode. Defrost Conditions for Defrost Activation: The following three conditions must be met to activate Defrost.
Page 45: Control Mode (Indoor Unit Mode Control)
OPERATION Control Mode (Indoor Unit Mode Control) General Technical Parameters Remote to receiver distance: 26 ft (8m). Remote receiver angle: Less than 80 degrees. Temperature control accuracy: ± 33.8°F (1°C) Time error: Less than 1%. Emergency Switch Pressing the emergency button will activate the automatic mode of operation. Press the button to turn it on and press it again to turn it off.
Page 46: Outdoor Unit Control Mode
OPERATION Outdoor unit Control Mode 1. Cooling Anti-freeze Protection To prevent freezing caused by too low temperature of indoor evaporator, the air conditioner will implement real-time detection over the indoor coil temperature. If the indoor coil temperature is too low, the compressor will be prohibited from increasing or decreasing the frequency or shutting down automatically.
Page 47 OPERATION Outdoor Unit Control Mode 7. Outdoor four-way Valve Control Four-way valve of the outdoor machine shuts down when cooling but starts when heating. The operation of heating defrosting refers to defrosting operation and, when the heating remote shutdown, the four-way valve disconnects in 50s when the compressor stops working.
Page 48 OPERATION Control Mode Fan Only Mode (1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/medium/low, but can not be set to auto. Cooling Mode Indoor fan logic: Runs all the time and the speed can be selected as high, (medium), low and auto.
Page 49 OPERATION Control Logic Description Heating Mode Indoor fan: The fan of the indoor unit will not run until the heat exchanger of the indoor unit reaches a high enough temperature. This prevents cold air blowing into the space. After the indoor coil reaches adequate temperature, the speed can be selected as high, medium, low, or auto.
Page 50 OPERATION Control Logic Description Auto Mode This mode can be chosen with remote controller and the setting temperature can be changed between 61°F~86°F(16°C~30 In auto mode, the machi ne will choos e cooling, heatin g or fan-only mode according to T ( T =T1 -Ts).
Page 51 OPERATION Control Logic Description Condenser High-temperature Protection TE 10 TE 11 Conditions: Cooling mode: When the outdoor coil temp. sensor is higher than 142 F for more than 10 seconds, the compressor and outdoor fan will shuto . When the sensor is lower than 122F, the compressor and outdoor fan will restart up.
Page 52: Installation
INSTALLATION Outdoor Units Fig. 432 Fig. 433...
Page 53 INSTALLATION Outdoor Units Additional Refrigerant Charge Although refrigerant has been charged into this unit, additional refrigerant charge may be required according to the piping length. The additional refrigerant precharge quantity should be determined and charged into the system according to the following procedure.
Page 54 M M AX. leng g th allow e e d INSTALLATION Indoor unit 24 and 36k Outdoor Units Model Piping Work and Refigerant Charge A≤ 65.6(20) A≤ 65.6(20) Max. Length Between Indoor Unit B≤ 65.6(20) ft./m B≤ 65.6(20) and Outdoor Unit C ≤...
Page 55: Leak Check, Evacuation, And Charging (Triple Evacuation)
Leak Check, Evacuation, and Charging (Triple Evacuation) Friedrich requires all installations are Leak Checked and Evacuated in accordance to the “triple evacuation” process. This process promotes a dry tight refrigeration system before opening the service valves. It recommended that a single port refrigeration manifold and hoses rated over 31.5psi be used.
Page 56 INSTALLATION Leak Check, Evacuation, and Charging (Triple Evacuation) EVACUATE BREAK VACUUM WITH DRY NITROGEN WAIT EVACUATE BREAK VACUUM WITH DRY NITROGEN WAIT EVACUATE CHECK FOR TIGHT, DRY SYSTEM (IF IT HOLDS A VACUUM) CHARGE SYSTEM...
Page 57: Checklist
INSTALLATION Checklist Check Unit following Installation Items to be checked Possible malfunction Has the unit been The unit may drop, shake or installed ﬁrmly? emit noise. Have you done the It may cause insufﬁcient cooling refrigerant leakage test? (heating) capacity. Is heat insulation of It may cause condensation and pipeline sufﬁcient?
Page 58: Field Settings (Esp Setting) Duct Type Only
INSTALLATION Field Settings (ESP Setting) Duct Type Only The static pressure can be freely adjusted by using speciﬁc wire remote controller. Model The range of Error Indicator (Capacity Function code set static pressure Btu/h) Parameter Code 0-50, more than 50 is 0-0.015 in.Hg 0.015 in.Hg (50 Pa), 9K/12K/18K...
Page 59: Field Settings (Indoor Unit Parameter Revision)
INSTALLATION Field Settings (Indoor Unit Parameter Revision) 1. Connect wire remote controller with indoor unit Step 1: Removing the upper cover of the wired controller Upper cover of the wired controller Lower cover of the wired controller Insert a normal screw driver into the position, and gently rotate it.
Page 60 INSTALLATION Field Settings (Indoor Unit Parameter Revision) PAR AME TE R VALUE &R E PR E S E NTATIO N PAR AME TE R PAR AME TE R NO TE D ATA R E PR E SE NTATIO N C O D E D E SC R IPTIO N TY PE (FUNC TIO N C O D E )
Page 61 INSTALLATION Field Settings (Running Parameter Query) Running Parameter Query Running parameters can be referred to by digital tube switch or speciﬁed wired remote control. Operation: 1. Connect wired remote controller with indoor unit (same method as indoor parameter revise. 2. Changing system parameter. O PE R ATIO N: and parameter ①...
Page 62 INSTALLATION Field Settings (Function Settings) Instructions for the function setting of acces s control, ﬁre protection , ON/OFF 1. Factory setting ON/OFF function is disabled a s factory default while both the access control and fire protectio n functions are enabled. To use or cancel the ac cess control / ﬁre protection / (ON/O FF ) function , use the wired controller to modify the parameter s of indoo r unit.
Page 63 INSTALLATION Field Settings (Function Settings) When using the do or lock function, the red wire should be c ut and connect ed to the door lock control switch attached t o it (supplied by user), an d the connecting wire should be 22AWG or ab ove.
Page 64 INSTALLATION Field Settings (Outdoor units) DIP Settings Dip Switch Setting of Outdoor Unit Mark of " " indicates the position of dip switches. Switch is valid when is ON. function By default se tting is OFF. OFF ----normal mode ON ----refrigerant collection mode When the power is ON, the dial changed from OFF to ON, enters into refrigerant collection mode.
Page 65 INSTALLATION Field Settings (Outdoor units) Running Parameter Query Outdoor Running parameters can be checked by 7 segment display. 7 segment display Digital Display Switch Outdoor control board ● ● ● Decrease Select Increase There are 3 buttons on the digital display board ： 1) Sel ect button: Select to display outdoor/indoor unit parameter.
Page 66 INSTALLATION Field Settings (Outdoor Units)
Page 67 INSTALLATION Field Settings (Outdoor Units)
Page 68: Operation Test
INSTALLATION Operation Test Test Operation System Checks 1. Conceal refrigerant pipes where possible. 2. Make sure drain hose slopes downward along entire length. 3. Ensure all refrigerant pipes and connections are properly insulated. 4. Fasten pipes to outside wall, when possible. 5.
Page 69: Fresh Air Intake
INSTALLATION Fresh Air Intake Duct (9K~18K) Indoor unit can take fresh air from the reserved fresh air intake, the size of the fresh air intake hole is 2-1/2 in.(65mm) (9K~18K). Please follow the steps below when needed. 1) Cut off the reserved metal circular hole on the base board. 2) Connect air duct with the fresh air intake.
Page 70: Maintenance
MAINTENANCE...
Page 71 MAINTENANCE The following is a deep cleaning and must be completed by a professional. Usera are strictly forbidden operate privately, otherwise they will be at their own risk. Cut off the power supply by moving the power switch In the dlnictlon of the arrow.
Page 72 MAINTENANCE L'.h The followlng 18 a deep cleanlng and must be completed by a professlonal. L'.h Users ara strlctly forbidden to operate prlvately, otherwise they wlll be at their own risk. Remove the acrews of the air duct. (G poaltlon and H poaltlon) screws.
Page 73: Troubleshooting
TROUBLESHOOTING Normal Malfunctions...
Page 74: Test The Jumper Terminals
TROUBLESHOOTING Test the jumper terminals Note: When the whole machine is powered up, if the external unit does not work, to rule out the communications failures, adopt screening method such as short circuit on the jumper terminals to see if the external unit can be started normally or similar method.
Page 75: Protection Circuit Fault Isolation
TROUBLESHOOTING Protection Circuit Fault Isolation Protection diagnosis of the complete machine (all types of protection during operation, i.e. under-voltage, over-voltage and overcurrent protection) Note:List all types of protection that may occur to the complete machine and describe the conditions and signs of the start, course and end of such protection.
Page 76: Compressor Fault Isolation
TROUBLESHOOTING Compressor Fault Isolation Judging the connecting terminals of inverter compressor: It is impossible to identify terminals U, V and W of inverter compressor with multi-meter. Just connect the terminals in the same way as the original unit when replacing the compressor. A wrong connection will lead to reverse and loud noise of the compressor.
Page 77 TROUBLESHOOTING Indoor Fault Codes (2) Fault codes indicated by LED lamps on display panel Lamp RUN(LED2 ,red) and Lamp DEFROS T（LED5 ,green）ﬂashing ，Lamp RUN display fault code ten digit number, lamp DEFROST disp lay fault code single digit number (as shown ﬁg.
Page 78 TROUBLESHOOTING The following is the fault code table of indoor. Indoor Fault Code Sheet 2 Indoor Fault code Fault Fault Description Possible Reason of Abnormality How to Deal With Re marks code 1.1 Check whether there are something to block the drain hose or the height of the 1.
Page 79: Indoor Fault Code
TROUBLESHOOTING Indoor Fault Code Fault Fault Description Possible Reason of Abnormalit y How to Deal With Re marks code EE in MCU is failure, the unit Indoor EEPROM run, but the function user has set Replace EE data in MCU. Data 2 error is ineffective.
Page 80: Outdoor Fault Codes
TROUBLESHOOTING Outdoor Fault Codes...
Page 81 TROUBLESHOOTING Outdoor Fault Codes...
Page 82 TROUBLESHOOTING Outdoor Fault Codes Fault code Fault description Possible reasons for How to deal with Remarks abnormality Outdoor ambient "1.The outdoor ambient "1.Reconnect the outdoor temperature sensor fault temperature sensor is ambient temperature connected loosely; sensor; 2.The outdoor ambient 2.Replace the outdoor temperature sensor fails to ambient temperature sensor work;...
Page 83 TROUBLESHOOTING Outdoor Fault Codes Fault code Fault description Possible reasons for How to deal with Remarks abnormality The communication fault "1. The connection cable is "1. Reconnect the connection between the indoor unit connected improperly between cable referring to the wiring and outdoor unit the indoor unit and outdoor diagram;...
Page 84 TROUBLESHOOTING Outdoor Fault Codes Fault code Fault description Possible reasons for How to deal with Remarks abnormality Discharge temperature "1.The wiring of the discharge "1. Reconnect the wiring of sensor fault temperature sensor is the discharge temperature connected loosely; sensor; 2.The discharge temperature 2.
Page 85 TROUBLESHOOTING Outdoor Fault Codes Fault code Fault description Possible reasons for How to deal with Remarks abnormality Expansion valve A (gas "1. The wiring of the sensor "1. Reconnect the wiring of pipe) sensor fault for the expansion valve A (gas the sensor for the expansion pipe) is connected loosely;...
Page 86 TROUBLESHOOTING Outdoor Fault Codes Fault code Fault description Possible reasons for How to deal with Remarks abnormality Too high discharge "1. The refrigerant of the unit "1.Check the welding point temperature fault is not enough; to confirm whether the unit 2.The refrigerant of the unit has leakage point and then is not enough due to that the...
Page 87 TROUBLESHOOTING Outdoor Fault Codes Fault code Fault description Possible reasons for How to deal with Remarks abnormality Indoor ambient "1. The cable of the room "1. Reconnect the cable THIS CODE IS ONLY Temperature Sensor Fault temperature sensor is connect of the room temperature APPLICABLE TO loosely;...
Page 88 TROUBLESHOOTING Outdoor Fault Codes Fault code Fault description Possible reasons for How to deal with Remarks abnormality "Communication between "1.The wiring between the "1. Reconnect the wiring THIS CODE IS ONLY main control board display board to the indoor between the display board APPLICABLE TO &...
Page 89 TROUBLESHOOTING Outdoor Fault Codes...
Page 90: 18K Outdoor Drive Fault Codes
TROUBLESHOOTING 18K Outdoor Drive Fault Codes...
Page 91: 24K, 36K, And 42K Outdoor Drive Fault Codes
TROUBLESHOOTING 24k, 36k, and 42k Outdoor Drive Fault Codes...
Page 92 TROUBLESHOOTING 24k, 36k, and 42k Outdoor Drive Fault Codes...
Page 93: Diagnosis And Solutions
TROUBLESHOOTING Diagnosis and Solutions 64.8°F 66.6°F...
Page 94 TROUBLESHOOTING Diagnosis and Solutions 7 4. Trouble Diagnosis of Compressor 7 5. Trouble Diagnosis of Electric Filter Board 7 6.Trouble Diagnosis of Electric Communication between 0vdc and 24vdc. Replace indoor and outdoor control board if there aren’t any voltage fluctuations.
Page 95 TROUBLESHOOTING Diagnosis and Solutions...
Page 96 TROUBLESHOOTING Diagnosis and Solutions...
Page 97 TROUBLESHOOTING Diagnosis and Solutions...
Page 98 TROUBLESHOOTING Diagnosis and Solutions...
Page 99 TROUBLESHOOTING Diagnosis and Solutions...
Page 100 TROUBLESHOOTING Diagnosis and Solutions...
Page 101 TROUBLESHOOTING Diagnosis and Solutions...
Page 102 TROUBLESHOOTING Diagnosis and Solutions...
Page 103 TROUBLESHOOTING Diagnosis and Solutions...
Page 104: E36 Error
TROUBLESHOOTING E36 Error E36 Error Does communica�on wiring meet speciﬁca�ons? Replace wiring 14 gauge stranded wiring rated as required. for 600v Are there any junc�on boxes or Replace wiring splices in the wiring except for as required. code required disconnects? Is Wiring connected to the proper terminals? Correct wiring...
Page 105 TROUBLESHOOTING E36 Error Fig. 701 (Checking Communication)
Page 106: Blank Display/Indoor Unit Door Micro Switch
TROUBLESHOOTING Blank Display/Indoor Unit Door Micro Switch If the Display is blank, check to see if the door is properly closed. If the door is properly closed, confirm that you have proper line voltage to the indoor unit. If the indoor unit door is not properly closed, or if the door micro switch has malfunctioned the display may be blank. See Figure 702 When the micro‑switch is not engaged, and the power button is depressed, there will be no display and the system will not operate or respond in any way.
Page 107 TROUBLESHOOTING Blank Display/Indoor Unit Door Micro Switch When the Timer On/Clock button is pressed you will see a temperature on the display, but still no system operation. After a few seconds, the display will drop the temperature leaving just the Wi‑Fi and Timer icons. Still no indoor unit operation. See Figure 704. Fig.
Page 108 TROUBLESHOOTING E64 Error E64 Error Does communication wiring meet specifications? Replace wiring 14 gauge stranded wiring rated as required. for 600v Are there any junction boxes or Replace wiring splices in the wiring except for as required. code required disconnects? Is Wiring connected to the proper terminals? Correct wiring...
Page 109: R-410A Sealed System Repair
R-410A SEALED SYSTEM REPAIR Service Valves Appearance 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Valve cap Hexagonal wrench (4mm) Open position Flare nut Flare nut Closed position Open position Closed position piping piping Service Service connection connection port cap port To outdoor unit To outdoor unit...
Page 110 R-410A SEALED SYSTEM REPAIR Pumping Down Liquid side Indoor unit Open Outdoor unit 2-Way valve Gas side Open 3-Way valve CLOSE CLOSE Purge the air – Do this quickly so that the gauge ends up indicating 0-15 PSI. – Remove the valve stem caps and conﬁrm that the valve stems are in the raised position.
Page 111: Gas Charging (After Repair)
R-410A SEALED SYSTEM REPAIR Gas Charging (After Repair) Liquid side Indoor unit Outdoor unit 3-Way valve Open Gas side 3-Way valve Open OPEN CLOSE This is di erent from previous procedures. – Connect the charge hose which you dis-connected from the Because you are charging with liquid refrigerant vacuum pump to the valve at the bottom of the cylinder.
Page 112: Replace 18/24K Outdoor Unit Compressor And Motor
R-410A SEALED SYSTEM REPAIR Replace 18/24k Outdoor unit Compressor and Motor Important: Befor e disassembly and assembly, mak e sure that the power to the system has been disconnected and veriﬁed as voltage free. Step Illustration Handling Instruction 1. Remove the top cover, handle and valve cover;...
Page 113: Replace 36/ 42K Outdoor Unit Compressor And Motor
R-410A SEALED SYSTEM REPAIR Replace 36/ 42k Outdoor unit Compressor and Motor Important: Before disassembly and assembly, make sure that the power to the system has been disconnected and veriﬁed as voltage free. Step Illustration Handling Instruction 1. Remove the top cover, 1.
Page 114: Replace 9K And 12K Duct Type Unit Compressor And Motor
R-410A SEALED SYSTEM REPAIR Replace 9k and 12k Duct Type unit Compressor and Motor Removal and Assembly of Fan Motor Important: Before removing the fan, make sure power to the system is disconnected. Step Illustration Handling Instruction Use screwdriver to remove the 1.
Page 115: Replace 18K Duct Type Unit Compressor And Motor
R-410A SEALED SYSTEM REPAIR Replace 18k Duct Type unit Compressor and Motor Removal and Assembly of F an Motor Important: Before removing the fan, make sure power to the system is disconnected. Step Illustration Handlin g Instruction Use screwdriver to remove the 1.
Page 116: Replace 9K, 12K, And18K Cassette Type Unit Compressor And Motor
R-410A SEALED SYSTEM REPAIR Replace 9k, 12k, and18k Cassette Type unit Compressor and Motor Replacement of F an Motor Step Illustration Handli ng Instruction 1. Loose n the screws Use screwdriver to loos en the screws holding the holding condensate pan . drain pa n in place.
Page 117: Replace 9K, 12K, And18K Cassette Type Unit Compressor And Motor
R-410A SEALED SYSTEM REPAIR Replace 9k, 12k, and18k Cassette Type unit Compressor and Motor Replacement of F an Motor Illustration Step Handli ng Instruction 6. Remov e the motor Remove the motor and and replac e it replace it. 7. Tighten the bolts wrench holding the motor socket...
Page 118 R-410A SEALED SYSTEM REPAIR Replace 9k, 12k, and18k Cassette Type unit Compressor and Motor Removal and Installation of Condensate Pump Illustration Step Handli ng Instruction Use screwdriver to loosen 1. Loose n the screws screws holding the holding condensat e pan . drain pan in place.
Page 119: Replace 24K And 36K Cassette Compesdsor And Motor Type Unit Compressor And Motor
R-410A SEALED SYSTEM REPAIR Replace 24k and 36k Cassette Compesdsor and Motor Type unit Compressor and Motor Step Illustration Handling Instruction 1. Loosen the screws Use screwdriver to loosen the Electric box. holding the electric box cover and electric box. 2.
Page 120: Components Testing
COMPONENTS TESTING Compressor OVERLOAD PROT ECTION INVERTER POWER & CONTROLLER Resistance Test. The compressor is at fault if the resistance of winding is 0 (short circuit)or ∞ open circuit. Common signs compressor is faulty: • Compressor motor lock. • Discharge pressure value approaches static pressure value . •...
Page 121: Fan Motor
COMPONENTS TESTING Fan Motor Resistance Test. Test the resistance of the main winding. The indoor fan motor is faulted if the resistance of main winding 0 (short circuit)or ∞ open circuit. DC Voltage test Manually rotate indoor fan motor slowly for several revolutions, and measure voltage “YELLOW” and “GND” on motor. The voltage repeats 0V DC and 5V DC.
Page 122: Eev Stepper Coil
COMPONENTS TESTING EEV Stepper Coil Discharge pipe temperature is too high. This means the compressor is over heating and will shut down and lock itself out. The cause for this issue is lack of refrigerant coming back to the compressor to cool the compressor. The main causes of this would be low charge, restriction or issue with the electronic expansion valve (EEV).
Page 123: Check Refrigerant System (Outdoor)
COMPONENTS TESTING Check Refrigerant System (Outdoor) TEST SYSTEM FLOW Conditions: ① Compressor is running. ② Th e air condition should be in stalled in good ventilation. Tool: Pressure Gauge Technique: ① see ② feel ③ test ----- Tube defrost. FEEL ----- The difference between tube’s temperature.
Page 124: Test System Flow (Outdoor)
COMPONENTS TESTING Test System Flow (Outdoor) Cooling mode Test system The pressure on the pressure.Does the low high side. pressure normal at service part ? Recharge refrigerant after air purging with If the pressure is The pressure on the the vacuum close to static low side.
Page 125: Check Fuse And Capacitor
COMPONENTS TESTING Check Fuse and Capacitor Checking continuity of fuse on PCB ASS’Y. Remove the PCB ASS’Y from the electrical component box. Then pull out the fuse from the PCB ASS’Y (Fig.1) Fuse PCB Ass'Y Fig.1 2) Check for continuity by a multimeter as shown in Fig.2. Fuse Fig.2 .CAPACITOR...
Page 126: 7K Indoor Wall Mount Printed Circuit Board
COMPONENTS TESTING 7k Indoor Wall Mount Printed Circuit Board Interface of PG motor Room temperature sensor Pipe temperature sensor Switch button Feedback from PG motor Up down swing Left right swing Wiring control or wifi interface Display interface 10 Protective tube Figure 701 7k Indoor Unit Printed Circuit Board Identification Interface of PG...
Page 127: Ducted 9,12, And 18K Ducted Indoor Units Control Board
COMPONENTS TESTING Ducted 9,12, and 18k Ducted Indoor Units Control Board Description Description...
Page 128: Ducted 24K And 9-24K Cassette Indoor Units Control Board
COMPONENTS TESTING Ducted 24k and 9-24k Cassette Indoor Units Control Board Description Description...
Page 129 COMPONENTS TESTING 18k Outdoor Main Printed Circuit Boards Description Description Driver EE Data Socket Sensor Signal from Sensor Board DC Motor Communication Signal to Indoor Only for developer AC Power Lin Electronic Expansion Valve B AC Power Nin Electronic Expansion Valve A Earth For developer Reactor L1...
Page 130: 18K Outdoor Main Printed Circuit Boards
COMPONENTS TESTING 18k Outdoor Main Printed Circuit Boards Sensor PCB Display PCB Description Gas B/Liquid B/Gas A/Liquid A sensor Discharge Sensor/ Defrost Sensor /Coil Sensor /Suction Sensor/ Outdoor Sensor High Pressure Switch Liquid C/ Gas C/Liquid D/Gas D sensor (Invalid for 18K) Sensor Signal to Main Board Select Switch Signal to Mainboard to Indoor Communication signal to main board...
Page 131: 24K Outdoor Main Printed Circuit Board
COMPONENTS TESTING 24k Outdoor Main Printed Circuit Board Description Description AC Power Computer Monitor DC Power 7-Segment display DC fan Compressor Overheat Protection Switch IPM-SI Low Pressure Switch Signal to filter board High Pressure Switch 15V & 5V Power Liquid C/Gas C Sensor Discharge/defrost/Coil/Suction/Ambient SI-N Sensor...
Page 132: 24K Outdoor Drive Printed Circuit Board
COMPONENTS TESTING 24k Outdoor Drive Printed Circuit Board Description Description IGBT 15V & 5V Power Diodes Rectifier Bridge CPU Code Drive Board Code Communication with Upper System AC Power Input IPM Module...
Page 133: 36K/ 42K Outdoor Main Printed Circuit Board
COMPONENTS TESTING 36k/ 42k Outdoor Main Printed Circuit Board Description Description Compressor Overheat Protection Switch 4-Way Valve Discharge/Defrost/ Coil/Suction/Ambient Compressor Heater-N Sensor Liquid A/Gas A/ Liquid B/Gas B Sensor Compressor Heater-L Liquid C/Gas C/ Liquid D/Gas D Sensor SI-N Electronic Expansion Valve A SI-D Electronic Expansion Valve B SI-C...
Page 134: 36K/ 42K Outdoor Drive Printed Circuit Board
COMPONENTS TESTING 36k/ 42k Outdoor Drive Printed Circuit Board Description Description DC Fan Signal Reactor L2 IPM-SI Compressor W Compressor U Compressor V Driver Reactor L1...
Page 135: Wiring Diagrams
WIRING DIAGRAMS 7k Wall Units...
Page 136: Ducted Indoor Units 9K, 12K, And 18K
WIRING DIAGRAMS Ducted Indoor Units 9k, 12k, and 18k Remark: Dashed parts are not available in some models. Details see the table below. Wired ON/OFF Step Pump WIFI NANOE Display Indoor units model Humidity remote output motor motor Module Module board Duct controller...
Page 137: 9K-36K Indoor Cassette Units
WIRING DIAGRAMS 9k-36k Indoor Cassette Units Remark: Dashed part s are not available in some models. Details see the table below. Pump WIFI Display Wire remote ON/OFF Step motor Indoor units model motor module board controller output Cassette 9K~36K ● ●...
Page 138: 18K Outdoor Units
WIRING DIAGRAMS 18k Outdoor Units...
Page 139 WIRING DIAGRAMS 24k Outdoor Units...
Page 140: 36K Outdoor Units
WIRING DIAGRAMS 36k Outdoor Units...
Page 141: 42K Outdoor Units
WIRING DIAGRAMS 42k Outdoor Units...
Page 142: Appendix
APPENDIX Reference Sheet of Celsius and Fahrenheit Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius Celsius Celsius temperature temperature temperature 60.8 69/70 69.8 78/79 78.8 62/63 62.6 71/72 71.6 80/81 80.6 64/65 64.4 73/74 73.4 82/83 82.4 66/67 66.2 75/76 75.2...
Page 143: Pipe Expanding Method
APPENDIX Pipe Expanding Method Pipe Pipe cutter Leaning Uneven Burr A:Cut the pip Conﬁrm the pipe length according to the distance of indoor unit and outdoor unit. Cut the required pipe with pipe cutter. B:Remove the burrs Pipe Shaper Remove the burrs with shaper and prevent the burrs from getting into the pipe. Downwards C:Put on suitable insulating pipe Union pipe...
Page 144: Resistance Table Coil And Room Sensor
APPENDIX Resistance Table Coil And Room Sensor R(32˚F)=15k Temp. Resistance Voltage Temp. Resistance Voltage Temp. Resistance Voltage (°F) (kΩ) (°F) (kΩ) (°F) (kΩ) 38.757 0.58143512 64.4 7.051 2.09859271 132.8 1.877 3.654865988 -2.2 36.844 0.60795346 66.2 6.778 2.14682606 134.6 1.818 3.686036427 -0.4 35.038 0.63530819...
Page 145: Resistance Table Of Outdoor Compressor Temperature Sensor
APPENDIX Resistance Table Of Outdoor Compressor Temperature Sensor R(32˚F)=187.25k Temp. Resistance Voltage Temp. Resistance Voltage Temp. Resistance Voltage (°F) (kΩ) (°F) (kΩ) (°F) (kΩ) 542.867 0.06185563 64.4 78.854 0.39694585 132.8 6.624 2.532777116 -2.2 512.839 0.06543004 66.2 75.381 0.41372093 134.6 6.414 2.573028606 -0.4 484.672...
Page 146 FPWC1 Optional wired wall controller for Floating Air Premier single zone and Floating Air Pro, single and multizone models. ® Does not work with FPHSW36A3B at this time. Please check with your Friedrich representative for options. Cable length = 24 ft (8m) ®...
Page 147: Interactive Parts Viewer
APPENDIX Interactive Parts Viewer All Friedrich Service Parts can be found on our online interactive parts viewer. Please click on the link below: Interactive Parts Viewer For Further Assistance contact Friedrich customer service at (1-800-541-6645). Limited Warranty Current warranty information can be obtained by referring to...
Page 148: Friedrich Authorized Parts Depots
APPENDIX Friedrich Authorized Parts Depots NEUCO Inc. The Gabbert Company Reeve Air Conditioning, Inc. 515 W Crossroads Parkway 2501 South Park Road 6868 Ardmore Hallandale, Florida 33009 Bolingbrook, IL 60440 Houston, Texas 77054 312.809.1418 954-962-0252 borr@neuco.com 713-747-4110 800-962-3383 800-458-4110 United Products Distributors Inc.

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Friedrich FPHMR18A3A Service Manual

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