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

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[8-11 Troubleshooting Inverter Problems (YKMU) ]
8-11-8

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 wir-
ing.
3)
No unbalanced voltage in the wiring.
After 30 second, detail code 132 is
produced and the system stops.
- 302 -
Remedy
Change fan board.
Change fan board.
Normal
*After checking, return SW1&CN-
INV.
GB

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