Checking The Fan Inverter For Damage At No Load - Mitsubishi Electric R410A Service Handbook
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- Technical manual (167 pages) ,
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[8-9 Troubleshooting Inverter Problems (TLMU) ]
8-9-8
Checking the Fan Inverter for Damage at No Load
Check list
(1)
Turn off breaker.
*Turn power off without fail.
(2)
Disconnect the connector
CNINV from the fan board.
(3)
Set fan board switch SW1-1 to
ON.
(4)
Turn on breaker.
(5)
Operate unit.
After about 30 seconds under
no load with constant voltage
output, the code below will be
displayed indicating a position
error (5305, 5306).
Detail code: 132
Also, running with no load pro-
duces constant voltage of
about 160V.
HWE14080
Phenomenon
1)
Within 30 seconds from the start of
operation, an error other than a posi-
tion error (5305, 5306) (detail code
132) is detected.
2)
Less than 5V unbalance in the wiring. Change fan board.
3)
No unbalanced voltage in the wiring.
After 30 second, detail code 132 is
produced and the system stops.
- 269 -
Resolution
Change fan board.
Normal
*After checking, return
SW1&CNINV.
GB
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