DIAGNOSTIC
6-5) Alarm Sounds continuously(related to the buzzer)
1) If “Ding-Dong” sounds continuously
Start
Freezer door MICOM No. 49, Fridge door MICOM No. 47 CF - door micom no.50
CR - door micom no.48
–Regular voltages are 5V to Open : 0V to Close.
Yes
Is the door slightly open?
|
|
|
|
|
|
| No |
| Remove causes after understanding | ||
|
| the conditions for interference by door | |||
|
|
|
| ||
Is moisture penetrated | Yes | gasket, food etc. | |||
|
|
| |||
|
|
| |||
into the door S/W? |
|
|
| ||
| NO |
|
|
| |
|
|
|
| ||
|
| Exchange the door S/W. | |||
|
| ||||
|
|
|
| ||
Is the input voltage of main PCB | NO |
|
| ||
|
| ||||
|
|
| |||
changed at |
|
|
|
| |
|
|
|
|
|
|
|
|
|
| ||
| YES |
| Troubleshoot the breaking of | ||
|
|
|
| wire and bad door S/W. | |
Is connector (CN30) inserted |
| NO |
|
| |
|
|
| |||
|
|
|
| ||
correctly? |
|
|
| ||
|
|
| |||
Separate the door S/W and check if the measured value of unit is changed from 0 to depending to S/W ON/OFF.
|
|
|
|
|
| |
| YES |
| Troubleshoot if connector is not | |||
|
|
|
| inserted or poor contact. | ||
Main PCB and door S/W are |
| NO |
|
| ||
|
|
| ||||
|
|
|
| |||
normal? |
|
|
| |||
|
|
| ||||
|
|
|
|
|
| |
| YES |
| inserted or poor contact. | |||
|
|
|
| Exchange the door S/W. | ||
Main PCB and door S/W are normal. | ||||||
|
|
| ||||
|
|
| ||||
|
|
|
|
|
| |
2) If “Beep” sounds continuously
Start
Did you select forced | Selected |
| |
operation and forced defrosting? |
|
NO
NO
Does buzzer still sound after power-on again?
Release the forced operation and forced defrosting functions, or turn ON again after power OFF.
YES
Check if there is any part shorted out or
foreign matter in the test jumper part within the
Main PCB is normal
64
