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Commercial Air Conditioning
SERVICE MANUAL
Features
T3 climate
High energy efficiency
Fixed frequency
Long distribution pipe and high drop
Flexible and easy installation
Auxiliary electric heating function (optional)
Optional safety devices and much more precision control device
Weekly timer (standard)
Group control function(Optional)
Auto restart function
Manual code: SYJS-012-08REV.0
Models
HDU-50HT03/H
HDU-42CA03T3/H
HDU-50CA03T3/H
HDU-60CA03T3/H
Edition: 2008-07-23
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Summary of Contents for Haier HDU-60CA03T3
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Page 1: Service Manual
High energy efficiency Fixed frequency Long distribution pipe and high drop Flexible and easy installation Auxiliary electric heating function (optional) Optional safety devices and much more precision control device Weekly timer (standard) Group control function(Optional) Auto restart function Manual code: SYJS-012-08REV.0... -
Page 2: Table Of Contents
Commercial Air Conditioner CONTENTS Contents………………………………………………………...2 1. Description of products & features………………………..3 2. Specification…………………………………………………5 3. Safety precaution……………………………………………7 4. Net dimension………………………………………………..9 5. Installation instructions………..……………………………10 6. Parts and functions…………………………………………15 7. Controller functions…………………………………………16 8. Electrical control functions…………………………………16 9. Electrical data……………………………………………….31 10. Troubleshooting…………………………………………...34 11. Noise curves..............36... -
Page 3: Description Of Products & Features
Design sequence C: cooling; H: heating Cooling capacity: 42=42000BTU/h U: single split unit Product type : “B” stands for cassette type, “CF” stands for convertible type, ”D” stands for duct, ”P” stands for cabinet system, Haier Brand Air Conditioner 1.2 Brief Introduction for T1 、T2、T3 working condition... - Page 4 High/low pressure switch can feel the discharging pipe pressure and suction pipe pressure on time and precisely. If the pressure is too low or too high, it will stop the compressor to prevent it being damaged for the sake of pressure.
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Page 5: Specification
A / A Cooling 9.5A/11.3A Heating 9.1/10.35 Start Current Class of anti electric shock CLASS I CLASS I Circuit breaker Max. operating pressure of heat side Max. operating pressure of cold side Unit model (color) HDU-50HT03/H(GREY) Type × Number centrifugal Speed(H-M-L) - Page 6 Speed r/min Fan + motor 0.23×2 Fan motor input power 6000 Total air-flow m³/h Diameter 9.52 Heat exchanger Row / Fin pitch （mm） 2/1.60 External 948×340×1250 L×W×H mm×mm×mm Dimension Package 1095×415×1400 L×W×H mm×mm×mm Refrigerant control method capillary tubes Volume of Accumulator...
- Page 7 Speed r/min Fan + motor Fan motor input power 0.23×2 6000 Total air-flow m³/h Diameter 9.52 Heat exchanger 2/1.60 Row / Fin pitch （mm） External 948×340×1250 L×W×H mm×mm×mm Dimension 1095×415×1400 Package L×W×H mm×mm×mm Refrigerant control method capillary tubes Volume of Accumulator...
- Page 8 Norminal condition: indoor temperature (cooling): 29 ℃DB/19℃WB, Outdoor temperature(cooling): 46 ℃DB/24℃WB, The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a sound pressure noise level. The detailed method please refer to the following information:...
- Page 9 1.air outlet from side: the noise level is the average sound pressure level measured from front, left, right directions. 2.air outlet from top: the noise level is the average sound pressure level measured from front, back, left, right directions. measured point: H ( height to the ground) = (h (unit height) + 1m) /2 and, it is 1m to each side.
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Page 10: Safety Precaution
Commercial Air Conditioner 3. Safety precaution... - Page 11 Commercial Air Conditioner...
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Page 12: Net Dimension
Commercial Air Conditioner 4. Net dimension 1105 1200 1320 (mm) Power wiring Terminal Screw Hole (4xM10) -
Page 13: Installation Instructions
Commercial Air Conditioner 5. Installation Instructions 5.1 Outdoor unit installation... - Page 14 Commercial Air Conditioner...
- Page 15 Commercial Air Conditioner HDU-50HT03/H HDU-50HT03/H it is also apply to HDU-42CA03T3/H,HDU-50CA03T3/H, HDU-60CA03T3/H HDU-50HT03/H...
- Page 16 Commercial Air Conditioner 5.2 Indoor unit installation...
- Page 17 Commercial Air Conditioner HDU-50HT03/H it is also apply to HDU-42CA03T3/H,HDU-50CA03T3/H, HDU-60CA03T3/H HDU-50HT03/H...
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Page 18: Parts And Functions
Commercial Air Conditioner 6. Parts and Functions... - Page 19 Commercial Air Conditioner 7.Refrigerant circuit...
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Page 20: Controller Functions
POWER LED will be OFF. If the controller is in TIMER and SLEEP mode, the TIMER LED will be on; if it is not in TIMER and SLEEP mode, the TIMER LED will be off. - Page 21 2.1.2 In heating mode(Cooling only unit without this function) Wired type units: If it is the first time to enter auto fan mode(fan motor is stop), when Tr>Ts-1, it is in Low speed; Tr≤Ts-3, it is in High speed; Otherwise, it is in Med speed. If the current mode is auto low speed, when Tr＜Ts-1, fan speed will turn to med speed.
- Page 22 3 minutes, the unit measure the temperature again, at this time, if Tr＜Ts-3℃, it will enter heating mode, or it will still be in cooling mode; if the current mode is heating, when it arrive at the compressor stop temperature, the compressor will stop, after 3 minutes, the unit will measure the room temperature, if Tr＞Ts+3℃, it will enter cooling mode, or it will still be in heating mode.
- Page 23 Room temperature is controlled by the set temperature ( control precise is +1℃). Fan blade can select swing or stay in one position; fan speed can be low, med, high or auto speed. Also timer or sleep can be set.
- Page 24 If working in area A, when Tr＜Ts+1, it converts to area B; If working in area C, when Tr > Ts, it converts to area B; If working in area B, when Tr>Ts+3, it converts to area A, and Tr<Ts-1, it converts to area C. The conversion is shown...
- Page 25 Outdoor fan motor and compressor will open and close simultaneously (except for overheating), indoor fan speed can be set high, med, low, auto. And the air blade can swing or stay in one position. Also it can be set timer or sleep.
- Page 26 2.6.4 Anti cool air function in heating mode: When it is the first time to heat or after last defrosting is over, if Ticp<28℃, indoor fan motor will stop running. If Ticp≥28℃ and Ticp<38℃, indoor fan motor will run in low speed. If Ticp>38℃ and compressor has run for more than 4 minutes, indoor fan motor will run at set fan speed.
- Page 27 ● Indoor occurs overload protection and outdoor motor stops, if outdoor motor can not enter overheat state in 10 minutes after it runs again, also the compressor runs for 45 minutes in all and has run for over 20 minutes continuously, Ticp is below 43℃;...
- Page 28 When the unit is in cooling, dehumidifying, or heating mode, sleep function can be set. In cooling or dehumidifying mode, after in sleep mode for 1 hour, set temperature will arise 1℃, after a second 1 hour, set temperature will arise a second 1℃, and continue working for 6 hours, the unit shut off.
- Page 29 In heating and blowing mode, when water tank is fully filled, the float switch will be off. The water pump will start to work after a controller has detected this signal and has last for 2 seconds. it will continue working for 5 minutes after the float restores to normal state.
- Page 30 3.1 3-minute protection for compressor startup After the compressor stops, at least 3 minutes later, the compressor can restart up; if the unit is powered off in running, after being electrified, 3 minutes later, the compressor can restart up. Being electrifed for the first time, there is 3-minute delay protection.
- Page 31 5 minutes contineously, outdoor motor at least runs for 2 minutes; If the outdoor ambient temperature and outdoor coil temperature can comply with the shadow area in the figure and keep for 1 minute, the defrost will work and send defrost signal to indoor unit, then indoor unit will control indoor motor accordingly.
- Page 32 Indoor sends defrost signal to outdoor, and the outdoor will receive the defrost signal when compressor is running in heating mode, then enter the defrost process. When outdoor coil temperature arrives the defrost-end point and the defrost time is over 5 minutes, outdoor will send the defrost-end signal to finish the defrost.
- Page 33 -1 degree for over 1 minutes, compressor and outdoor motor will stop and enter Fan mode. After compressor stops for 9 minutes, and indoor coil temp. rises up to 10 ℃, the unit resumes to cooling mode, compressor and outdoor motor will work again.
- Page 34 30 seconds, LCD will display Low pressure abnormal (3) In defrosting and in 6 minute after defrost is over , low pressure switch will not be checked. (4) In heating, compressor run and outdoor motor stop, low pressure switch will be shielded.
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Page 35: Electric Data
6 ARE NOT AVAILABLE IN SOME TYPE 5. FOR COOLING CAPACITY IS 52000BTU AND 28000BTU TYPES,THE DIP SWITCH SW1 IS ON 5P SIDE,FOR COOLING CAPACITY IS 42000BTU AND 36000BTU TYPES,THE DIP SWITCH SW1 IS ON 10P SIDE. 6. FOR COOLING CAPACITY IS 52000BTU TYPE,THE LINE THROUGH CT IS ONE CIRCUIT,FOR COOLING CAPACITY IS 42000BTU 36000BTU AND 28000BTU TYPES,THE LINE THROUGH CT IS TWO CIRCUITS. - Page 36 Commercial Air Conditioner 0010452441 for the outdoor unit CN10 CN12 CN11 As for indoor unit, the PCB code is 0010400132.
- Page 37 R：RED BL：BLUE 2、DASHED PARTS ARE SELECTED ACCORDING TO THE DIFFERENT MODELS. Y/G:YELLOW/GREEN 3、THE DIP-SWITCH HAS BEEN SETTED WHEN OUT OF FACTORY,PLEASE DO NOT CHANGE. TRANS.:TRANSFORMER 4、 CN11 IS SHORT CONNECTED IF THE UNIT IS WITHOUT FLOAT SWITCH. CIRCUIT DIAGRAM OF OUTDOOR UNIT...
- Page 38 Commercial Air Conditioner 0010451429 for the outdoor unit CN11 CN10 As for indoor unit, the PCB code is 0010452032.
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Page 39: Troubleshooting
HDU-60CA03T3/H Indoor unit 0010401922 coil temp. sensor R25=10KΩ±3%，B25/50=3700K±3% 10. Troubleshooting As for the failure code, please refer to the page 26 and page 30 1) Sensor failure check if the wiring is correct according to reconnect wiring diagram if sensor is fixed... - Page 40 P C B y e s if te rm in a ls A ,B ,C ,D o f...
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Page 41: Noise Curves
Commercial Air Conditioner 1.Noise curves level pressure Sound... -
Page 42: Performance Curves
Commercial Air Conditioner 12. Performance curves capacity Cooling... - Page 43 Commercial Air Conditioner capacity(W) Cooling...
- Page 44 Commercial Air Conditioner capacity(W) cooling...
- Page 45 Commercial Air Conditioner Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com...