Mitsubishi Electric PUHZ-W90VHA, Руководство по обслуживанию

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8-8. FUNCTION OF SWITCHES
Switch
Function
Selection
Initial setting* Function details
Effective timing
(SW1, 8) /
Note (SW6)
mark No. ON (with) OFF (without)
SW1
1
Forced
defrosting
ON to start Usual setting OFF
Switch ON to forced defrosting When compressor
is working in heating
mode.*1
2
To clear error
history
ON to clear Usual setting OFF
Switch ON to clear (erase) the followings:
(1)Error codes and Suspension flags in RAM
(2)Error codes and Suspension flags in
EEPROM
off or operating
3 No function Do NOT use PUHZ-W90VHA OFF
– –
4 No function Do NOT use PUHZ-W90VHA OFF
5 No function Do NOT use PUHZ-W90VHA OFF
6 No function Do NOT use PUHZ-W90VHA OFF
SW6
1 Model Setting 1 Do NOT use PUHZ-W90VHA OFF PCB may be damaged, if switched ON. ON for other models
2
Defrost control
selection
For high
humidity
Standard OFF
Switch ON to change conditions (standard /
high himidity) to start defrosting
–
3~6 Model Setting 2
SW6
3 4 5 6
1 0 1 0
1=ON, 0=OFF
As shown in
the left table
–
Make sure to set
SW6-3 to 6 correctly
SW8
1 Mode selection
Energy saving
mode
Powerful mode OFF – Always
2
Cooling only,
Heating only or
Reversible
Cooling only or
Heating only
Reversible OFF
To select Cooling only, Heating only or
Reversible
Always
3
To fix operation
mode
Cooling only Heating only OFF To fix as Cooling Only or Heating Only Always
<Important Note>
All these dip switches on PUHZ-W90VHA are set as shown above.
Spare PCBs, however, will be supplied without any settings, which means that all dip switches are switched OFF.
When servicing, please make sure to set all switches correctly, referring to the previous PCB which is removed from the unit.
*1. Forced defrosting should be done as follows.
Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
Forced defrosting will start by the above operation if these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous forced defrosting finished.
• Pipe temperature is less than or equal to 8
.
• Forced defrosting will finish if certain conditions are satisfied.
Forced defrosting can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.
After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This
depends on the service conditions.