Mitsubishi Electric PUHZ-W50VHA-BS Service Manual page 81

PUHZ-HW112YHA(-BS)
PUHZ-HW140YHA(-BS)
PUHZ-HW140VHA(-BS)
PUHZ-HW140VHA2R2-BS
Switch
Function
Mark No.
1 Forced defrosting
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
SW6 Single phase /
4
3 phase
5-8 Model Setting 2
1
Starting Ambient
temp. of fl ash
SW7
injection
*2
(HW·HA2)
2
3-6 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-HW·HA(2) 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.
*2. Only PUHZ-HW·HA2 mounts SW7.
OCH439H
PUHZ-HW112YHA2(-BS)
PUHZ-HW140YHA2(-BS)
PUHZ-HW140VHA2(-BS)
PUHZ-HW140VHA2R3(-BS)
Selection
ON (with) OFF (without)
ON to start usual setting
ON to clear usual setting
Do NOT use PUHZ-HW·HA(2)
Disregard Normal
Do NOT use PUHZ-HW·HA(2)
Do NOT use PUHZ-HW·HA(2)
Silent setting (FAN) usual setting
Silent setting (Hz) usual setting
Do NOT use PUHZ-HW·HA(2)
Do NOT use PUHZ-HW·HA(2)
For high humidity Standard
Do NOT use PUHZ-HW·HA(2)
SW6
Model
1 2 3
HA 0 0 0
HA2 1 0 0
HA2R3 1 1 0
1=ON, 0=OFF
3 phase Single phase
SW6
Model
5 6 7
HW112 0 1 1
HW140 1 1 1
1=ON, 0=OFF
Ambient temp. of ZUBADAN Flash
injection becomes effective.
SW7-1 SW7-2 Ambient temp.
[ 3°C (Initial setting)
OFF OFF
[ 0°C
OFF ON
[ -3°C
ON OFF
[ -6°C
ON ON
Do NOT use PUHZ-HW·HA2
Energy saving mode Powerful mode
Max. current
Model
OFF
HW140V 35 A
HW140VHA2R1 31A
HW112/140Y 13 A
Separate power Outdoor unit power
supply supply
Do NOT use –
PUHZ-HW112YHA2R1(-BS)
PUHZ-HW140YHA2R1(-BS)
PUHZ-HW140VHA2R1(-BS)
Initial setting*
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
As shown in the left
table
HW112/140Y :ON
HW140V :OFF
8
As shown in the left
0
table
0
OFF
OFF
OFF
OFF
ON
OFF
29.5 A
29.5A
12 A
OFF
–
81
PUHZ-HW112YHA2R3(-BS)
PUHZ-HW140YHA2R3(-BS)
Function details
Switch ON to force defrosting
Switch ON to clear (erase)
the followings:
(1)Error codes and Suspension
fl ags in RAM
(2)Error codes and Suspension
fl ags in EEPROM
–
Error 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
Always
Always
–
–
Always
–
–
–
–
–
–
–
Always
–
Always
ON
ON
–