Haier AW07EH2VHA Service Manual page 81

4
Control Board
Located under the electrical control box cover.
5 Ambient Temperature Sensor
The Ambient Temperature Sensor senses room temperature. This sensor provides room temperature information to the
ECU for calculation of inverter capacity and temperature control.
6
Piping Temperature Sensor
The Piping Temperature Sensor senses indoor coil temperature in the cooling mode and in the heating mode. This
sensor is used for Anti Freezing and Anti Cold Blow cycles. The sensor also provides critical temperature information
to the ECU that may be used in frequency adjustments.
7
Condensate Pump
The Mid-Static Ducted unit has a built in condensate pump. The pump is connected to the circuit board. The pump is
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
8
The pump is capable of minimal lift. If high lift is required, the water from the Mid-Static Ducted unit should be pumped to a
WiFi
The unit comes shipped with a WiFi module that provides control via a smartphone app.
Components Components
MID-STATIC DUCTED TECHNICAL OVERVIEW
G-3