Self Diagnostic Function For Malfunctions Detection - Carrier 53KHET 30-36 Installation Manual

23. SELF DIAGNOSTIC FUNCTION FOR MALFUNCTIONS DETECTION

EXPLAINATION OF SELF-DIAGNOSTIC FUNCTION
- Self-diagnostic function is the key for success of air conditioner operation.
- The printed circuit boards existing inside the indoor unit are equipped with self-diagnostic function
to detect malfunction and automatically stops the operation of the air conditioner.
- Once a malfunction is detected, the display panel of the indoor unit will shows the malfunction type
through the indicator leads of display panel.
Display 30K
Hi Wall Split Systems
53KHET30-708F
53KHET36-708F
Malfunction
Reason
Return Air Sensor
( open or short circuit )
Indoor Coil Sensor
( open or short circuit )
Outdoor Unit Protection
Works
Compressor Overload
cuts out 4 times
Electronic Control PCB
( EEPROM error )
Indoor Unit
Communication error
Refrigerant leak
Leds Status Refers To Malfunction Reason
X = OFF
= Flash at 5Hz
= Flash continuously
1- Prior to the malfunction repair, disconnect the electrical mains supply by moving the circuit
breaker to OFF position.
2- After repairing the malfunction:
2-1 connect the electrical main supply by moving the circuit breaker to ON position
2-2 operate the air conditioner by using the wireless remote control.
Cool Only
Heat Pump
X X
X X
X X
X
X X
X
NOTES
51
Display 36K
Hi Wall Split Systems
53QHET30-708F
53QHET36-708F
Malfunction
Reason
Return Air Sensor
(open or short circuit)
Indoor Coil Sensor
(open or short circuit)
Outdoor Coil Sensor
(open or short circuit)
Outdoor Unit
Protection Works
Compressor Overload
cuts out 4 times
Electronic Control PCB
( EEPROM error )
Indoor Unit
Communication error
Refrigerant leak
Leds Status Refers To Malfunction Reason
X = OFF
= Flash at 5Hz
= Flash continuously
X X
X X
X X X
X X
X
X X
X
X
X
X
X
X