Electrical Box Temperature Rise - Daikin K-Series Service Manual

SiBE061121.book Page 107 Monday, April 25, 2011 3:21 PM
SiBE061121

4.22 Electrical Box Temperature Rise

L3
Remote
Controller
Display
Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the
compressor off.
Malfunction
Detection
Malfunction
Decision
Conditions
25/35 class
50 class
Supposed
Causes
Service Diagnosis
With the compressor off, the radiation fin temperature is above A °C.
The error is cleared when the radiation fin temperature drops below B °C.
To cool the electrical components, the outdoor fan starts when the radiation fin temperature
rises above C °C and stops when it drops below B °C.
A (°C)
98
95
Defective outdoor fan motor
Short circuit
Defective radiation fin thermistor
Disconnection of connector
Defective outdoor unit PCB
B (°C) C (°C)
75 83
80 85
Troubleshooting
107