Electrical Box Temperature Rise - Daikin FTKS20D3VMW Service Manual

SiENBE12-713

5.22 Electrical Box Temperature Rise

L3
Remote Control
Display
Outdoor Unit LED
A
Display
Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the
Malfunction compressor off.
Detection
" With the compressor off, the radiation fin temperature is above 100°C.
Malfunction
" The error is cleared when the temperature drops below 70°C.
Decision
Conditions
" Fin temperature rise due to defective outdoor unit fan
Supposed
" Fin temperature rise due to short-circuit
Causes
" Fin thermistor defective
" Connector in poor contact
" Outdoor unit PCB defective
Service Diagnosis
5 1 4 2 4 3 1 4 4
Troubleshooting
265