9 Self-diagnosis
According to the LED on the outdoor PCB, locations of malfunction can be detected. Other than indications below occurring,
switch off the power supply, then switch on to restart the operation.
20
CS-C45FFH / CU-C45FFH
No
LED5
LED4 LED3
LED2 LED1
1
●
●
●
Power Supply Phase
Problem
Negative or open phase or
improper connection of main
supply.
2
●
●
Discharge pressure
protection
Refrigeration cycle
3
●
●
Compressor over current
protection
Open phase or lock in
compressor
4
●
●
●
Compressor discharge
temperature protection
Insufficient refrigerant
5
●
●
Condenser outlet sensor
problem
The sensor or the connector
CN-TH(3,4)
6
●
●
Compressor discharge
sensor problem
The sensor or the connector
CN-DIS
7
●
●
Outdoor ambient air
temperature sensor
problem
The senor or the connector CN-
TH(1,2)
8
●
●
●
Compressor current
detector open circuit
problem
Open phase of power supply,
compressor current detector
open circuit.
9
●
●
●
Heating pressure switch
open circuit problem
Heating pressure switch or the
connector CN-PSW1
10
●
●
●
High pressure switch open
circuit problem
High pressure switch or the
connector CN-PSW2
11
●
●
●
●
Refrigeration cycle problem
Insufficient refrigerant or
connector CN-HOT
LEDS ON OUTDOOR PCB
ERROR
CHECK LOCATION
●
LED Flashing
Blank: OFF
Summary of Contents for CS-C45FFH
Page 8: ...8 4 Dimensions Indoor Unit CS C45FFH CU C45FFH 357 23 5X4 1880 16 5 56 Remote Controller ...
Page 9: ...9 Outdoor Unit CS C45FFH CU C45FFH CU C45FFH 900 620 140 40 5 320 ...
Page 43: ...CS C45FFH CS C45FFH CU C45FFH 43 44 37 38 39 40 41 42 14 13 43 ...
Page 45: ...17 Exploded View CS C45FFH CU C45FFH 45 ...
Page 46: ...CS C45FFH CU C45FFH 46 ...
