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4) Emergency operation method
* Before starting, recheck that the trouble allows
emergency operation.
*1 Only when PEH-P8YE or P10YE indoor unit
connected.
Start
Piping work complete?
Turn on indoor power *1
Check that mains power is OFF
Turn on mains power
Turn on emergency operation switch
(SWE) on indoor controller board
Short CN31 (emergency operation
connector) on outdoor controller board
Check that emergency operation starts,
and that operation mode display flashes
Set operation mode (cooling or heating) with SW4-2 on outdoor board
(SW4-1 not used)
SW4
Cooling
Heating
OFF ON
1
2
NO
YES
*1. When PEH-P8YE or P10YE indoor unit is con-
nected, first turn off the outdoor unit power, then
turn off the indoor unit power.
Turn off mains power. (Outdoor, indoor)
*1
1
Turn on mains power
5
Turn off emergency operation switch
(SWE) on indoor controller board
2
Open CN31 (emergency operation
connector) on outdoor controller board
3
SW4
OFF ON
1
2
Set SW4-2 as shown below
4
5) Emergency operation release method