41
8-8. FUNCTION OF SWITCHES
PUHZ-W85VHA2.UK PUHZ-W85VHA2-BS.UK
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 force defrosting
When compressor
is working in heat-
ing 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-W85VHA2
OFF
–
–
4
No function
Do NOT use
PUHZ-W85VHA2
OFF
5
No function
Do NOT use
PUHZ-W85VHA2
OFF
6
No function
Do NOT use
PUHZ-W85VHA2
OFF
SW5
1
Max. fan step
selection
STEP 9
STEP 8
OFF
Selection of max. fan step at the silent mode
Always
2
Max. frequency
selection
Middle level
Low level
OFF
Selection of max. compressor frequency at
the silent mode
Always
3
No function
Do NOT use
PUHZ-W85VHA2
OFF
–
–
4
No function
Do NOT use
PUHZ-W85VHA2
OFF
SW6
1
Model Setting 1
Do NOT use
PUHZ-W85VHA2
OFF
PCB may be damaged, if switch is ON.
ON for other mod-
els
2
Defrost control
selection
For high
humidity
Standard
OFF
Switch ON to change conditions (standard /
high humidity) to start defrosting
–
3~6
Model Setting 2
Model
SW6
SW10
3
4
5
6
1
2
W85VHA2
1
0
1
1
0
1
1=ON, 0=OFF
As shown in
the left table
–
Make sure to set
SW6-3 to 6 and
SW10-1,2 correctly
SW10 1,2
SW7 1~6
No function
Do NOT use
PUHZ-W85VHA2
OFF
–
–
SW8
1
Mode selection
Energy saving
mode
Powerful mode
OFF
–
Always
2
No function
Do NOT use
PUHZ-W85VHA2
OFF
–
–
3
Separate
Interface/Flow
temp. control-
ler-outdoor unit
power supplies
Separate
power supply
Outdoor unit power
supply
OFF
Power supply connection method selection
When power supply
ON
<Important Note>
All these dip switches on PUHZ-W85VHA2 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.
1
Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2
Forced defrosting 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 forced defrosting is 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.