Mitsubishi Electric PLH Series Technical & Service Manual page 40

2-10 Dip switch functions
Each figure shows the initial factory setting.
1. On remote controller board
(1) SW17(Address selector)
1 2 3 4 5 6 7 8
ON
OFF
SW17-1~6) For address setting
SW17-7) When two remote controllers are used,this switch sets the controller function.
OFF:The remote controller is set as a main controller.
ON:The remote controller is set as a sub controller.
SW17-8) Switch for system back-up (This switch is unavailable for PLH-GKHB.UK Keep this switch at OFF.)
OFF:Without back-up
ON:With back-up
(2) SW18(Function selector)
1 2 3 4
ON
OFF
SW18-1) Switch for timer
OFF:Single day ON:timer every day
SW18-2) Switch for filter sign
OFF:filter sign adsent
ON:filter sign present
SW18-3) Switch for filter sign time setting.
OFF:100Hr ON:2500Hr
SW18-4) Not yet used.
2. On indoor controller board
(1) SW1 (Mode selector)
1 2 3 4 5 6 7 8 9 0
ON
OFF
SW1-1) Switch that changes between FAN mode and AUTO mode
OFF:Fan mode for models without heat pump
ON:AUTO mode for models with heat pump
SW1-2) Switch for indoor fan fluctuate operaton
OFF:Without fluctuation
ON:With fluctuation
SW1-3) Switch for auto vanes
OFF:Unit without auto vanes
ON:Unit with auto vanes
SW1-4) Switch for drain pump
OFF:The drain pump works in only COOL operation.
ON:The drain pump works in both COOL and HEAT operation.
SW1-5) Switch to change the temperature to start coil frost prevention
OFF:-3°(For previous special models)
ON:1°(For all current models)
SW1-6) Switch for set temperature adjustment in HEAT mode
During HEAT operation,warm air collects near the ceiling.When the indoor unit is installed near the ceiling,the
temperature read by room temperature thermistor differs from the actual living-space temperature by about 4
degrees. Therefore,the room temperature read by room temperature thermistor must be lowered by 4 degrees.
OFF:4-degree adjustment
ON:NO adjustment
SW1-7) Switch for fan speed during thermostat OFF in HEAT operation
OFF:EXTRA LOW
ON:LOW
SW1-8) Switch for fan speed during thermostat OFF in HEAT operation
OFF:EXTRA LOW or LOW(set with SW1-7)
ON:LOW or HIGH(set with remote controller)
SW1-9) Switch for detecting abnormalities in the outdoor unit abnoamality detection
OFF:When an abnormality occurs,it is detected.
ON:Even if an abnormality occurs,it can not be detected.
SW1-10) Switch for auto restart function
OFF:This function does not work
ON:This function works.
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