Electrical Box Temperature Rise - Daikin SUPER MULTI NX CTXS07JVJU Service Manual

Troubleshooting for Outdoor Unit

6.18 Electrical Box Temperature Rise

L3
Remote
Controller
Display
j
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
Malfunction
 The error is cleared when the temperature drops below
Decision
 To cool the electrical components, the outdoor fan starts when the radiation fin temperature
Conditions
18 class
24/32 class
 Defective outdoor fan motor
Supposed
 Short circuit
Causes
 Defective radiation fin thermistor
 Disconnection of connector
 Defective outdoor unit PCB
183
i i h i
1 2 3 4
rises above C and stops when it drops below
A
176°F (80°C)
212°F (100°C)
B .
B C
158°F (70°C) 167°F (75°C)
158°F (70°C) 185°F (85°C)
SiUS12-928_B
.
A
.
B
Service Diagnosis