Carrier ClassiCOOL 53KDHT60N-518 - Outdoor Unit PCB Malfunction Codes

54
SELF DIAGNOSTIC FUNCTION FOR MALFUNCTIONS DETECTION
The electronic printed circuit board in the outdoor unit is
equipped with smart self diagnostic.
When the system is on and in a malfunction, Leds Status of Printed Circuit Board will
refer to malfunction reason for easy fast service and maintenance.
Leds Status of Printed Circuit Board ( PCB ) of
Side Discharge Outdoor Unit
DSP1
Malfunction Reason
---
Standby
E1
Lack of phase, wrong phase
E4
Power Error
E5
Outdoor coil temperature sensor error ( open or short circuit )
P0
High pressure protection
P1
Low pressure protection
P4
Current protection
P6
Outdoor coil temperature sensor failure ( open or short circuit )
oN
Cool run
NOTES
1- Prior to the malfunction repair, disconnect the electrical mains supply by moving the circuit breaker to OFF position.
2- After repairing the malfunction, connect the electrical main supply by moving the circuit breaker to ON position
and operate the air conditioner by using wired room controller.