Indoor Unit Circuit Board - Haier AW07EH2VHA Service Manual

Ductless multi-split heat pump

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Condensate Pump

The pump is energized whenever the Float Switch indicates that water needs to be pumped from the cassette. The float

switch connects onto the circuit board.

1. If in COOL or DRY mode: Compressor running (Thermal ON), then condensate pump is energized

•When compressor stops (Thermal OFF), condensate pump runs for an additional 5 minutes

2. If in COOL or DRY modes and compressor is running (Thermal ON) and the float switch opens for 5 minutes

•Compressor will stop, the pump will continue to run

•If the float switch does not close, error code will display and pump continues to run

•If the float switch does close, the pump will continue to run for 5 additional minutes

3. During standby (Thermal OFF) in COOL/DRY modes or in HEAT and FAN modes and float switch opens for 2 seconds,

the condensate pump is energized.

•If the float switch closes, the pump will run an additional 5 minutes

•If the float does not close, the pump continues to run and error code is displayed

Gravity Drain Ports

supplied condensate pump that is capable of high lift.

Accessory Louver Motors (not shown)

Separate motors located in the accessory supply air louver

control the operation of the motorized louvers. The louver

motors are stepper type motors that move the louvers up/

down. The motors are controlled by pulsed voltage that cannot

be measured. If the louver does not move when it should, check

for a bind in the louvers.

All of the louver motors are controlled via commands received

from the remote control.