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8-9. FUNCTION OF SWITCHES
PUHZ-W112VHA
PUHZ-W112VHA-BS
PUHZ-W112VHAR1
PUHZ-W112VHAR1-BS
Switch
Function
Mark
No.
1
Manual defrost
2
To clear error history
SW1
3
No function
4
Abnormal disregard
5
No function
6
No function
1
Silent setting (FAN)
2
Silent setting (Hz)
3
No function
SW5
4
No function
Defrost control
5
selection
6
No function
1-3
Model Setting
Single phase /
4
3 phase
SW6
5-8
Model Setting 2
SW7
1-6
No function
1
Mode selection
2
Max. current setting
SW8
Separate Interface/Flow
3
temp.controller - outdoor
unit power supplies
SW9
1-4
No function
<Important Note>
All these DIP switches on PUHZ-W112VHA 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
Manual defrost should be done as follows.
1 Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2 Manual defrost will start by the above operation 1 if these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor starts operating or previous manual defrost is finished.
• Pipe temperature is less than or equal to 8:.
Manual defrost will finish if certain conditions have been satisfied.
Manual defrost can be done if above conditions have been 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.
OCH562D
PUHZ-W112VHAR2
PUHZ-W112VHAR2-BS
PUHZ-W112VHAR3
PUHZ-W112VHAR3-BS
Selection
ON (with)
OFF (without)
ON to start
usual setting
ON to clear
usual setting
–
–
Disregard
Normal
–
–
–
–
Silent setting (FAN)
usual setting
Silent setting (Hz)
usual setting
–
–
–
–
For high humidity
Standard
–
–
SW6
Model
1
2
3
W
0
0
1
1=ON, 0=OFF
Do NOT use
Single phase
SW6
Model
5
6
7
W112
0
1
1
1=ON, 0=OFF
–
–
Energy saving mode
Powerful mode
Max. current
Model
OFF
W112
29.5A
Separate power
Outdoor unit power
supply
supply
–
–
Default setting
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
As shown in the left
table
OFF
As shown in the left
8
table
0
OFF
OFF
OFF
ON
23.0A
OFF
–
51
Function details
Switch ON to manual defrost
Switch ON to clear (erase)
the following:
(1)Check codes and
Suspension flags in RAM
(2)Check codes and Suspension
flags in EEPROM
–
Check code (P8,UH):
Abnormal detection disregard
–
–
Fan speed setting in silent mode
Hz setting in silent mode
–
–
Switches to optimal defrosting
operation for low-temperature
and high-humidity regions.
–
–
–
Make sure to set
SW6-5 to 8 correctly
–
–
When power supply
–
Power supply connection
When power supply
method selection
–
Effective timing
Always
*1
Always
Always
–
–
Always
–
–
–
–
–
–
–
–
Always
ON
ON
–
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