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Mitsubishi Electric PURY-P72 Service Handbook page 304

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Table of Contents
[ IX Troubleshooting ]
Outdoor Unit Fan
-4- Outdoor Unit Fan
(1) Fan motor
ŒTo check the revolution of the fan, check the inverter output state on the self-diagnosis LED, as the inverter on the outdoor
fan controls the revolutions of the fan.The revolution of the fan is approximately 680rpm(P72 model),790rpm(P96 model),
630rpm (P120 model), 750rpm (P144 model) at full speed.
ŒWhen starting the fan, the fan runs at full speed for 5 seconds.
ŒWhen setting the DIP SW4 (when SW6-10 is set to OFF) as shown in the figure below, the inverter output [%] will appear.
100% indicates the full speed and 0% indicates the stopping. (Fan 2 is only on the P120 through 144 models.)
ŒAs the revolution of the fan changes under control, at the interphase or when the indoor unit operation capacity is low, the
revolution of the fan may change.
ŒIf the fan does not move or it vibrates, fan inverter board problem or fan motor problem is suspected. Refer to IX [4] -7- (2) [5]
"Check the fan motor ground fault or the winding." (page 314)(page 325) and IX [4] -7- (2) [6], [7], [8] "Check the FAN board
failure." (page 314)(page 325)
HWE1116D
Fan 1
Fan 2
SW4
SW4
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10
1
2
ON
ON
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