Diagnostics
11-3) If defrost function
Start
Is F, R defrosting sensor by
NO
YES
NO
Is F, R Room defrosting heater normal?
Exchange and troubleshoot the
corresponding sensor.
See Ref. 3: ‘Check load’ in the manual.
Make decision on the basis of ref. 4 and 6 in the manual.
See test function in the manual.
NO
Recheck the corresponding sensor for an error if it fails in return.
Reference
If temp. of F, R defrosting sensor by the working of heater are over 50℉, 63℉
|
|
|
|
|
|
| YES |
| Check temp. fuse, | ||
|
|
|
| breaking of heater wire, contact of | |
Is temp. of the defrosting | NO | wire and so on. | |||
|
|
| |||
sensor below 23℉? |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
| |
| YES |
| Run forced operation for a | ||
|
| specified period. | |||
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Perform forced defrosting for F and
R room at a time.
Is power applied to the | NO |
respective defrosting heaters? |
|
|
YES
Does the system
return to cooling operation after heating
for a specified period of time?
YES
Normal
See ‘Load Drive Circuit section’ and Ref. 2: How to check failure of relay.
Recheck the connection | NO | |||
terminal in Main PCB |
|
|
| |
|
|
|
| |
|
|
|
|
|
| YES |
| Repair the connection terminal. | |
|
| |||
|
|
|
|
|
Check temp. fuse, breaking of heater wire, contact of wire, and so on.
Exchange or troubleshoot the failure relay or
exchange PCB ass’y.
48
