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Checking The Fan Inverter For Damage At No Load - Mitsubishi Electric PURY-HP72 Service Handbook

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[8-10 Troubleshooting Inverter Problems (TKMU) ]
8-10-8

Checking the Fan Inverter for Damage at No Load

Items to be checked
(1)
Turn off breaker.
*Turn power off without fail.
(2)
Disconnect the connector CN-
INV 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).
Detail code: 132
Also, running with no load pro-
duces constant voltage of
about 160V.
HWE13080
Phenomena
1)
Within 30 seconds from the start of
operation, an error other than a posi-
tion error (5305) (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.
- 292 -
Remedy
Change Fan board.
Normal
*After checking, return SW1&CN-
INV.
GB

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