Mitsubishi Electric EHGT17D-YM9ED Service Manual page 69

(2) Function of switches (Controller circuit board)
DIP switch
SW1 SW1-1
SW1-2 Abnormal history clear
SW4 SW4-1
SW4-2
SW5 SW5-1
SW5-2 Power failure automatic recovery*1
SW5-3
SW5-4
SW5-5
SW5-6
SW6
SW6-1 Brine pump manual operation
SW6-2
SW6-3 Brine pump manual operation
SW6-4
SW6-5
SW6-6 Model select
SW6-7
SW6-8
SW7
SW7-1
*2
SW7-2
SW7-3
SW7-4
SW7-5
SW7-6 Starting brine temp. of borehole freeze prevention
SW8
SW8-1 Brine pump speed adjustment
SW8-2
SW8-3
SW9 SW9-1
SW9-2
Brine pump rotational speed adjustment
SW9-3
SW9-4
Note:
*1 "Power failure automatic recovery" can be set by either remote controller or this DIP SW. If one of them is set to ON,
"Auto recovery" activates.
*2 Please do not use SW7-3, 4 usually. Trouble might be caused by the usage condition.
OCH722A
Function
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
<Table 9.8.2>
69
OFF ON
— ―
Normal Clear
— ―
— ―
— ―
No auto recovery Auto recovery
— —
— ―
— —
— ―
Pump OFF Pump ON
— —
Inactive Active
Heat pump setting
— —
— —
— —
— —
— —
−2°C 0°C
See Installation manual '4.4
Brine Pipe Works'
— —
— —
See Installation manual '4.4
Brine Pipe Works'
Default
Effective timing
settings
— OFF
Always OFF
— OFF
— OFF
— OFF
When power supply ON ON
— OFF
— OFF
— OFF
— OFF
Always (ONLY Brine pump
OFF
manual operation)
― OFF
When power supply ON OFF
ON
ON
― OFF
ON
OFF
― OFF
― OFF
― OFF
― OFF
― OFF
Always OFF
Always OFF
― OFF
― OFF
OFF
OFF
Always
OFF
OFF