AMX PTM-D15 Service Manual Page 36
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- Table of contents
- BOOKMARKS
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This function prevents the circuit breaker or fuse from operating
to open the circuit. This function works when electrical current
has increased due to an increase in the cooling / heating load,
or to a decrease in the power supply voltage. In these cases,
operation frequency is reduced or operation is interrupted auto-
matically to control the electrical current for operation.
When the cause of the increase in electrical current is rectified,
the system will resume operation in the original mode.
•
•
Electrical current setting for COOL operation is
used during DEFROST operation.
Cooling Dry Heating
Peak current cut-off trips 22.5
Hz down 14.0 15.0
(A)
CT (Peak current cut-off control)
NOTE
NOTE
Heating operation
Frost sensing
Reverse-cycle defrosting operation
Defrosting Sequence
Releasing of defrosting
Outdoor fan ON
4-way valve ON
Outdoor heating exchanger temp. is over 68°F(20°C).
Defrosting operation lasts 12 minutes (maximum).
2 minutes after it is stopped, compressor is ON.
4-way valve is ON. Outdoor fan is ON.
If the air conditioner is turned off during the defrosting
cycle, it will continue defrosting and turn itself off after
defrosting is completed.
Compressor 1 minute after it is stopped,
compressor is ON.
Outdoor fan OFF
Indoor fan OFF
4-way valve OFF
Operation lamp
Reverse-Cycle Defrosting
Defrost detection and release
Repeatedly switches between red
and orange illumination.
Defrost detection occurs in either of the following cases:
The temperature of the heat exchanger remains at
or below the L2 line for 120 minutes after the start
of HEAT operation.
Outdoor heat
exchanger temp.
Ambient temp.
0
L1
L2
Frosting area
The temperature of the heat exchanger remains at
or below the L1 line for 3 minutes after the start of
HEAT operation.
•
•
34
- SM700647-01 1
- KHS0971 + CH0971 3
- KHS1271 + CH1271 3
- Important! 4
- Please Read Before Starting 4
- Table of Contents 5
- 1. OPERATING RANGE 7
- 2. SPECIFICATIONS 8
- Indoor Unit KHS0971 10
- Indoor Unit KHS1271 11
- Outdoor Unit CH0971 12
- Outdoor Unit CH1271 13
- 3. DIMENSIONAL DATA 15
- 4. REFRIGERANT FLOW DIAGRAM 17
- 5. PERFORMANCE DATA 18
- Indoor Air Temp.73 19
- °F (21.1°C) 20
- °F (26.7°C) 21
- Indoor Unit KHS0971 KHS1271 23
- Outdoor Unit CH0971 CH1271 24
- 7. INSTALLATION INSTRUCTIONS 25
- 7-1-2. Outdoor Unit 26
- WIRING SYSTEM DIAGRAM 27
- 7-3-1. Mounting on a Wall 28
- IMPORTANT 29
- Indoor Unit 30
- Control Unit 31
- Pull the cover upward 32
- 9. FUNCTIONS 33
- HIGH POWER 34
- NIGHT SETBACK 34
- Lamp colors 34
- Timer backup 34
- 9-2. Protective Functions 35
- Defrosting Sequence 36
- Defrost detection and release 36
- < Clock display > 37
- Test run mode 37
- Self-diagnostics mode 37
- 10. TROUBLESHOOTING 37
- PROCEDURE 37
- (1) Checking the indoor unit 40
- (2) Checking the outdoor unit 40
- 10-4-1. Outdoor Fan Motor 41
- (1) Noise malfunction 42
- Resistance 43
- PCB Ass'y 44
- 12. REFRIGERANT R410A: 45
- INSTRUCTION MANUAL 52
- APPENDIX 52
- Features 53
- Contents 54
- Product Information 54
- Alert Symbols 54
- Installation Location 55
- Electrical Requirements 55
- Safety Instructions 55
- Names of Parts 56
- OI-802-6-EG 57
- Remote Control Unit (Display) 58
- Remote Control Unit 59
- OI-802-9EG 60
- Using the Remote Control Unit 61
- OI-802-11EG 62
- OI-802-12-EG 63
- OI-802-13EG 64
- OI-802-14-EG 65
- OI-802-15EG 66
- OI-802-16-EG 67
- Special Remarks 68
- Setting the Timer 69
- Setting the Timer (continued) 70
- Using the 1-Hour OFF Timer 71
- Tips for Energy Saving 71
- OI-802-21EG 72
- Operation without the Remote 73
- Care and Cleaning 73
- Care and Cleaning (continued) 74
- Troubleshooting 76
- Operating Range 76
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