SERVICE MANUAL PACKAGED TERMINAL AIR CONDITIONER WITH HEAT PUMP Model: CH-PT09HPGF F or proper operation, please read and keep this manual carefully. Designed by Cooper&Hunter International Corporation, Oregon, USA www.cooperandhunter.
CONTENTS 1. Precaution P1-4 1.1 Safety Precaution P1 1.2 Warning P1-4 2. Functions and control panel. P5-7 3. Dimension P8 4. Refrigerant Cycle Diagram P9 5. Electronic function P10-16 5.1 Terms and definitions P10 5.2 Electric Control working environment P10 5.3 Protection function P10 5.4 Operation of fan motor P10-12 5.5 Operation of compressor P12 5.6 Dip switches and Jumper selection P13-14 5.7 Functions for Front desk switch panel and Wire Controller P15 6.
1. Precaution 1.1 Safety Precaution. ● To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1.2 Warning INSTALLATION ● Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. There is risk of fire or electric shock.
● Do not install the product on a defective installation stand. It may cause injury, accident, or damage to the product. ● Be sure the installation area does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury. ● Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open. Moisture may condense and wet or damage furniture.
● Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) There is risk of physical injury, electric shock, or product failure. ● When the product is soaked (flooded or submerged), contact an Authorized service center. There is risk of fire or electric shock. ● Be caution that water could not enter the product. There is risk of fire, electric shock, or product damage.
OPERATIONAL ● Do not expose the skin directly to cool air for long periods of time. (Do not sit in the draft). This could harm to your health. ● Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigerant system There is risk of damage or loss of property. ● Do not block the inlet or outlet of air flow. It may cause product failure. ● Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
2. Functions and control panel. The controls featured in this manual are representative of many available models. Your model may offer slightly different features. ·POWER - Press the POWER button to turn the unit on or off. When the unit is on,the power indicator light will be green.When the unit is off,the light will go out. ·MODE - Push this button to cycle through the modes from COOL-HEAT-FAN-COOL.The green indicator light beside the "MODE" option will illuminate, identifying the mode selected.
UP/DOWN BUTTONS ( ▲ / ▼ ) - Push the UP (or DOWN) button to increase (or decrease) the set temperature of the unit in cooling or heating mode.The temperature can be set by increments of 1℃ (1℉).The setting temperature appears in the display. NOTE:Press and hold ▲ and ▼ buttons together for 3 seconds will alternate the temperature display between ℃ &℉ scale. FAN (FAN SPEED) - Every time you push this button, the fan speed cycles through the settings as follows: HIGH-MED- LOW-HIGH.
Error codes: AS- Open or short circuit of room temperature sensor (T1); ES- Open or short circuit of evaporator temperature sensor( T2 ); CS-Open or short circuit of condenser temperature sensor (T3); oS-Open or short circuit of outside temperature sensor(T4); HS- Open or short circuit of exhaust temperature sensor( T5 or T6); Other codes: LO-Room temperature is lower than 0℃/32℉; HI-Room temperature is higher than 37℃/99℉ E4- Communication malfunction between main control board and display board LE- Drive
3. Dimension Top View D W H Front View Dimension : WxHxD（mm) WxHxD（inch) Dimension 1 （no sleeve,rear grille,and rear net) 1067x406x532 Dimension 2 （no rear grille and rear net, but include sleeve) 1067x408x578 Dimension 3 （include sleeve and rear net) 1067x408x588 Dimension 4 （include sleeve, rear net and rear grille) 1067x408x606 42.0x15.9x20.9 42.0x16.0x22.8 42.0x16.0x23.1 42.0x16.0x23.
4. Refrigerant Cycle Diagram The figure below is a brief description of the important components and their function in what is called the refrigeration system. This will help to understand the refrigeration cycle and the flow of the refrigerant in the Heat Pump Cycle.
5. Electronic function 5.1 Terms and definitions T1: Temperature of indoor ambient T2: Temperature of evaporator T3: Temperature of condenser T4: Temperature of outdoor ambient TS: The set temperature. DAHT: Temperature of discharge (T5) DAHT: Temperature of discharge (T6) 5.2 Electric Control working environment Input voltage: 265V, 60Hz; 230/208V, 60Hz 5.3 Protection function 5.3.1 The compressor functions protection with a delay of three minutes. 5.3.2 Sensor protection at open or short circuit. 5.3.
When T4＞T01 and lasts for 1 minute, the fan motor will operates at high speed. When T4＜T02 and lasts for 1 minute, the fan motor will operates at low speed. When T02≤T4≤T01: A) If fan motor is off originally, it will operate at high speed. B) If fan motor is on originally, it will keep on working at the original speed. 5.4.3. The fan motor operates at the heat pump and cooling mode( see FIG.B) T4 Operate on low speed T03 T04 Operate on high speed FIG.
If T2＞TE7, this unit turns into the protection of compressor off , and quits this protection when T2≤TE9. If T2＞TE8,it turns into the protection of fan motor off , and quits this protection when T2≤TE9. If T2＞TE15, fan motor operates at low speed by force, then quits the operation and determines the high or low speed by T4. 5.4.5. At the fan only mode, the fan always keeps on working, and the compressor/fan motor/heater stop working. 5.5 Operation of compressor 5.5.1.
5.5.2.1 The Electric heater operates as below: a.When T1＜Ts-2℉, the fan motor operates, and 3 seconds later, the heater is on and operates at low speed within 30 seconds. After 30 seconds, it will change to the setting speed. If the DAHT temperature checked is higher than the protection temperature, when the heater operating, the fan motor will be off automatically. b. When T1≥Ts+2℉, the heater is off, and the fan motor keeps on working at setting speed.
Table 1 DIP SWITCHES CONFIGURATIONS No. UP(ON) DOWN(OFF) Remarks S1 Electric Heat Only Electric Heat and Pump Heat For Heat Pump unit only S2 Temperature Display in℃ Temperature Display in ℉ S3 Wall Thermostat Enable UP*UP:61℉~86℉(16℃~30℃); UP*DOWN:65℉~78℉(18℃~26℃); DOWN*UP:63℉~80℉(17℃~27℃); DOWN*DOWN:68℉~75℉(20℃~24℃); Control Panel Enable S6 Fan Continuous Run for Heating Fan Cycle for Heating S7 Fan Continuous Run for Cooling Fan Cycle for Cooling S8 Low temp.
5.7 Functions for Front desk switch panel and Wire Controller. 1.Front desk switch panel: if a ON/OFF switch is connected to the ports, you can turn off A/C unit with it. Then the digital LED on the unit will display FC. (The FIG.A shows you how to connect the units) 2. Wired controller: the digital LED will display LC (Reserved) if a wired controller is connected. if the communication portal is one way, the buttons on the control panel will be invalid.
SUGGESTIONS: 1. TO Size transformer, use the following equation: Quantity of PTAC units x 1va=Transformer Size (va) Example: 110 PTAC units x1va=110va Transformer 2. Following are American Wire Gauge recommended sizes: AWG WIRE SIZE NO. MAX. LENGTH (ft) 24 400 22 600 20 900 18 1500 16 2000 6.
wall Installation figure 7. Installation details 7.1 How to install the unit iINSTALLATION ! CAUTION There are sharp edges that can cause serious cuts. When lifting the air conditioner, it is HEAVY. Use 2 people to lift.
Dimension of air conditioner - For existing sleeve, you should measure the wall sleeve dimensions. - Install the new air conditioner according to these installation instructions to achieve the best performance. All wall sleeves used to mount the new air conditioner must be in good structural condition and have a rear grille that securely attaches to the sleeve or the flange of the sleeve to secure the new air conditioner. - To avoid vibration and noise, make sure the unit is installed securely and firmly.
- Lift unit level and slide unit into wall sleeve until firmly against front of wall sleeve and secure with 4 screws and washers (supplied in the SLEEVE ASSEMBLY) through the unit flange holes. (See Fig.7 and Fig.8) - Reinstall front panel.(See Fig.9) Place tabs over top rail A . Push Inward at bottom until panel snaps into place B. 7.2 Care and cleaning • FRONT PANEL AND CASE - Turn unit off and disconnect power supply. To clean, use water and a mild detergent. Do not use bleach and abrasivers.
! CAUTION VENT DOOR FILTER IMPORTANT:TURN UNIT OFF BEFORE UNIT DAMAGE HAZARD CLEANING. Failure to follow this caution may result in - If the vent door is open, access requires the removal of equipment damge or improper operation. the unit from the wall sleeve. Clean the vent filter twice a Airflow restriction may cause damage to the unit. year or as required. - Make sure to remove the shipping screw from the vent - The most important thing you can do to maintain door.(See.Fig.
8. Operation characteristics 8.1 Cooling operation 45 Dry Outdoor air temp.℃ DB 40 Cooling 35 30 25 20 5 10 15 20 25 30 35 40 Indoor air temp.℃ DB 8.2 Heating operation 35 Indoor air temp.℃ DB 30 25 20 15 -5 5 15 25 Outdoor air temp.
9. Power connection options Appropriate power cord accessory kit is determined by the voltage, and amperage of the branch circuit. The unit does not come with a power cord (or hard wire kit). An accessory power cord must be ordered to connect the unit to the outlet. If the unit is to be hard wired, an accessory hard wire kit must be ordered. IMPORTANT: For 265V units, if a power cord is selected, it must plug into the 265V subbase accessory.
10.Troubleshooting 10.1 Error Display Contents Codes AS Open or short circuit of T1 temperature sensor ES Open or short circuit of T2 temperature sensor CS Open or short circuit of T3 temperature sensor oS Open or short circuit of T4 temperature sensor HS Open or short circuit of T5 or T6 temperature sensor Lo Temperature is lower than display range(0℃/32℉) HI Temperature is higher than display range(37℃/99℉) E4 Communication malfunction between main control board and display board.
10.2 Troubleshooting 10.2.1 Open circuit or short circuit of temperature sensor diagnosis and solution(AS/E5/CS/oS/HS) Error Code AS/E5/CS/oS/HS Malfunction decision conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure. Supposed causes ● ● ● Wiring mistake Faulty sensor Faulty PCB Troubleshooting: Check the connection between temperature sensor and PCB.
10.2.2 Communication malfunction between main control board and display board. (E4) Error Code E4 Malfunction decision conditions Main control board does not receive feedback from display board during 120 seconds.
10.2.3 Drive-by-wire controller failure. (LE) Error Code LE Malfunction decision conditions 1, Electric heating signal or compressor signal is on, but fan signal is off 2, Electric heating signal and compressor signal are on, but 4-way valve signal is off 3, Cooling only models have heating signal, or the 4-way valve signal and compressor signal are on at the same time.
POSSIBLE CAUSES UNIT DOES NOT START Unit may have become unplugged Fuse may have blown Circuit breaker may have been tripped Unit may be off Unit may be in a protection mode. UNIT NOT COOLING/HEATING ROOM Unit air discharge section is blocked Temperature setting is not high or low enough Note: Setpoint limits may not allow the unit to heat or cool the room to the temperature desired. Check section on dipswitch settings. Unit air filters are dirty. Room is excessively hot or cold when unit is started.
Characteristic of temperature sensor Temp.℃/℉ Resistance KΩ Temp.℃/℉ Resistance KΩ Temp.℃/℉ Resistance KΩ -10/14 62.2756 17/62 14.6181 44/111 4.3874 -9 /15.8 58.7079 18/64 13.918 45/113 4.2126 -8 /17.6 56.3694 19/66 13.2631 46/115 4.0459 -7 /19.4 52.2438 20/68 12.6431 47/117 3.8867 -6 /21.2 49.3161 21/70 12.0561 48/118 3.7348 -5 /23 46.5725 22/72 11.5 49/120 3.5896 -4 /24.8 44 23/73 10.9731 50/122 3.451 -3 / 26.6 41.5878 24/75 10.4736 51/124 3.
