Difference between revisions of "Platinum Series Troubleshooting (9K & 12K)"

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|-
 
|-
 
| 2
 
| 2
 +
| Antifreezing protection
 +
| E2
 +
| Off 3s and blink twice
 
|  
 
|  
 +
|
 +
| Off 3s and blink 3 times
 +
|
 +
|
 +
| During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates.
 +
|
 +
* Poor air-return in indoor unit;
 +
* Fan speed is abnormal;
 +
* Evaporator is dirty;
 +
|-
 +
| 3
 +
| System block or refrigerant leakage
 +
| E3
 +
| Off 3s and blink 3 times
 +
|
 +
|
 +
|
 +
| Off 3s and blink 9 times
 +
|
 +
| Dual-8 code display will show E3 until the low pressure switch stops operation.
 +
|
 +
* Low-pressure protection
 +
* Low-pressure protection of system
 +
* Low-pressure protection of compressor
 +
|-
 +
| 4
 +
| High discharge temperature protection of compressor
 +
| E4
 +
| Off 3s and blink 4 times
 +
|
 +
|
 +
| Off 3s and blink 7 times
 +
|
 +
|
 +
| During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop.
 +
| Please refer to malfunction analysis below.
 +
|-
 +
| 5
 +
| Overcurrent protection
 +
| E5
 +
| Off 3s and blink 5 times
 +
|
 +
|
 +
| Off 3s and blink 5 times
 +
|
 +
|
 +
| During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop.
 +
|
 +
* Supply voltage is unstable;
 +
* Supply voltage is too low and load is too high;
 +
* Evaporator is dirty;
 +
|-
 +
| 6
 +
| Communication malfunction
 +
| E6
 +
| Off 3s and blink 6 times
 +
|
 +
|
 +
|
 +
|
 +
| Off
 +
| During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop.
 +
| Please refer to malfunction analysis below.
 +
|-
 +
| 7
 +
| High temperature resistant protection
 +
| E8
 +
| Off 3s and blink 8 times
 +
|
 +
|
 +
| Off 3s and blink 6 times
 +
|
 +
|
 +
| During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop.
 +
| Please refer to malfunction analysis below.
 +
|-
 +
| 8
 +
| EEPROM malfunction
 +
| EE
 +
|
 +
|
 +
| Off 3s and blink 15 times
 +
| Off 3s and blink 11 times
 +
|
 +
|
 +
| During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop.
 +
| Replace outdoor control panel AP1
 +
|-
 +
| 9
 +
| Limit/decrease frequency due to high temperature of module
 +
| EU
 +
|
 +
| Off 3s and blink 6 times
 +
| Off 3s and blink 6 times
 +
|
 +
|
 +
|
 +
| All loads operate normally, while operation frequency for compressor is decreased.
 +
| Discharging after the complete unit is de-energized for 20mins, check whether the thermal grease on IPM module of outdoor control panel AP1 is sufficient and whether the radiator is inserted tightly. If it is no use, please replace control panel AP1.
 +
|-
 +
| 10
 +
| Malfunction protection of jumper cap
 +
| C5
 +
| Off 3s and blink 15 times
 +
|
 +
|
 +
|
 +
|
 +
|
 +
| Indoor unit does not respond to the wireless remote commands.
 +
|
 +
* No jumper cap inserted to main board;
 +
* Jumper cap is inserted incorrectly;
 +
* Jumper cap is damaged;
 +
* Abnormal detecting circuit of main board;
 +
|-
 +
| 11
 +
| Gathering refrigerant
 +
| F0
 +
| Off 3s and blink once
 +
| Off 3s and blink once
 +
|
 +
|
 +
|
 +
|
 +
| When the outdoor unit receives the F0 signal, the system will be forced to run under cooling mode for gathering refrigerant.
 +
| Nominal cooling mode
 +
|-
 +
| 12
 +
| Indoor ambient temperature sensor is open/short circuited
 +
| F1
 +
|
 +
| Off 3s and blink once
 +
|
 +
|
 +
|
 +
|
 +
| During cooling and drying operation, indoor unit operates while other loads will stop. During heating operation the complete unit will stop operation.
 +
|
 +
* Loosening or bad contact of indoor ambient temp. sensor and main board terminal;
 +
* Components in main board fell down leading to short circuit;
 +
* Indoor ambient temp. sensor damaged;
 +
* Main board damaged;
 +
|-
 +
| 13
 +
| Indoor evaporator temperature sensor is open/short circuited
 +
| F2
 +
|
 +
| Off 3s and blink twice
 +
|
 +
|
 +
|
 +
|
 +
| AC stops operation once it reaches the set temperature. Cooling/drying: internal fan motor stops operation while other loads stop operation. Heating: AC stops operation.
 +
|
 +
* Loosening or bad contact of indoor evaporator temp. sensor and main board terminal;
 +
* Components in main board fell down leading to short circuit;
 +
* Indoor evaporator temp. sensor damaged;
 +
* Main board damaged;
 +
|-
 +
| 14
 +
| Outdoor ambient temperature sensor is open/short circuited
 +
| F3
 +
|
 +
| Off 3s and blink 3 times
 +
|
 +
|
 +
| Off 3s and blink 6 times
 +
|
 +
| During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop.
 +
| Outdoor temperature sensor hasn't been connected well or is damaged.
 +
| -
 +
| 15
 +
| Outdoor condenser temperature sensor is open/short circuited
 +
| F4
 +
|
 +
| Off 3s and blink 4 times
 +
|
 +
|
 +
| Off 3s and blink 5 times
 +
|
 +
| During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop.
 +
| Outdoor temperature sensor hasn't been connected well or is damaged.
 
|}
 
|}

Revision as of 16:23, 13 November 2013

NO. Malfunction Name Display Method of Indoor Unit Display Method of Outdoor Unit A/C Status Possible Causes
Dual-8 Code Display Indicator Display Indicator Display
Operation Indicator Cooling Indicator Heating Indicator Yellow Indicator Red Indicator Green Indicator
1 High pressure protection of system E1 Off 3s and blink once During cooling and drying operation, all loads except the indoor fan stop operation. During heating operation, the entire unit stops.
  • Refrigerant was superabundant;
  • Poor heat exchange (including filth blockage of heat exchanger and bad radiating environment);
  • Ambient temperature is too high.
2 Antifreezing protection E2 Off 3s and blink twice Off 3s and blink 3 times During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates.
  • Poor air-return in indoor unit;
  • Fan speed is abnormal;
  • Evaporator is dirty;
3 System block or refrigerant leakage E3 Off 3s and blink 3 times Off 3s and blink 9 times Dual-8 code display will show E3 until the low pressure switch stops operation.
  • Low-pressure protection
  • Low-pressure protection of system
  • Low-pressure protection of compressor
4 High discharge temperature protection of compressor E4 Off 3s and blink 4 times Off 3s and blink 7 times During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop. Please refer to malfunction analysis below.
5 Overcurrent protection E5 Off 3s and blink 5 times Off 3s and blink 5 times During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop.
  • Supply voltage is unstable;
  • Supply voltage is too low and load is too high;
  • Evaporator is dirty;
6 Communication malfunction E6 Off 3s and blink 6 times Off During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop. Please refer to malfunction analysis below.
7 High temperature resistant protection E8 Off 3s and blink 8 times Off 3s and blink 6 times During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop. Please refer to malfunction analysis below.
8 EEPROM malfunction EE Off 3s and blink 15 times Off 3s and blink 11 times During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop. Replace outdoor control panel AP1
9 Limit/decrease frequency due to high temperature of module EU Off 3s and blink 6 times Off 3s and blink 6 times All loads operate normally, while operation frequency for compressor is decreased. Discharging after the complete unit is de-energized for 20mins, check whether the thermal grease on IPM module of outdoor control panel AP1 is sufficient and whether the radiator is inserted tightly. If it is no use, please replace control panel AP1.
10 Malfunction protection of jumper cap C5 Off 3s and blink 15 times Indoor unit does not respond to the wireless remote commands.
  • No jumper cap inserted to main board;
  • Jumper cap is inserted incorrectly;
  • Jumper cap is damaged;
  • Abnormal detecting circuit of main board;
11 Gathering refrigerant F0 Off 3s and blink once Off 3s and blink once When the outdoor unit receives the F0 signal, the system will be forced to run under cooling mode for gathering refrigerant. Nominal cooling mode
12 Indoor ambient temperature sensor is open/short circuited F1 Off 3s and blink once During cooling and drying operation, indoor unit operates while other loads will stop. During heating operation the complete unit will stop operation.
  • Loosening or bad contact of indoor ambient temp. sensor and main board terminal;
  • Components in main board fell down leading to short circuit;
  • Indoor ambient temp. sensor damaged;
  • Main board damaged;
13 Indoor evaporator temperature sensor is open/short circuited F2 Off 3s and blink twice AC stops operation once it reaches the set temperature. Cooling/drying: internal fan motor stops operation while other loads stop operation. Heating: AC stops operation.
  • Loosening or bad contact of indoor evaporator temp. sensor and main board terminal;
  • Components in main board fell down leading to short circuit;
  • Indoor evaporator temp. sensor damaged;
  • Main board damaged;
14 Outdoor ambient temperature sensor is open/short circuited F3 Off 3s and blink 3 times Off 3s and blink 6 times During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop. Outdoor temperature sensor hasn't been connected well or is damaged. - 15 Outdoor condenser temperature sensor is open/short circuited F4 Off 3s and blink 4 times Off 3s and blink 5 times During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating, all loads stop. Outdoor temperature sensor hasn't been connected well or is damaged.
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