Checking The Fan Inverter Heatsink For Clogging - Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook

[8-10 Troubleshooting Inverter Problems ]
8-10-20

Checking the Fan Inverter Heatsink for Clogging

Check the fan inverter heatsink for clogging by removing part of the duct and checking inside the duct.
To remove the duct, follow the procedures 1) through 3) below.
Reassemble the components in the reverse order as they were removed.
1) Remove the front service panel.
Service panel
3) Remove the upper section of the duct by unscrewing the screws on the control box (on the inverter box on the (E)M200-300 models) shown in the
figure below.
Check inside the duct for clogging, and remove any foreign objects found.
Top section of the
duct
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Remove the two
screws holding the
top section of the
duct.
(E)M200 - 300
2) Remove the main control box (applicable to the (E)M200-300 models only).
On the (E)M350-500 models, it is not necessary to remove the control box.
Main control box
Remove the two
screws holding the
top section of the
duct.
(E)M350 - 500
Inverter box
Top section of the duct
BS_08_E