Haier AU84NBTBAA User Manual page 7

Operation and performance
Protection device (High voltage switch, low voltage switch)
High voltage switch or low voltage switch is the device when the air conditioner
abnormally operates, it automatically makes the air conditioner stop operation.
When the protection device acts, HEATING or COOLING operation stops, but
the operation indicator light of the wire controller still lights up. The relative trouble
code is displayed.
When the following circumstances occur, the protection device acts.
In COOLING operation:
When the air inlet and air outlet of the outdoor unit is blocked.
When the strong wind directly blow the air outlet of the outdoor unit.
In HEATING operation:
When the air filter of the indoor unit is covered with dust.
When the air outlet of indoor unit is blocked.
When protection device acts, cut off the power switch first, after finding
the cause, then operate the air conditioner again.
About the power failure
When power failure occurs during operation, all the operation will stop.
When operating the unit again, press ìON/OFFî button.
When wrong action occurs during operation
During operation, because of the influence of thunder, automobile and wireless
disturbance,
the unit has wrong action, cut off the power switch, after powering on again, press
ìON/OFFî
button, the unit can be turned on or off.
About the HEATING capacity
HEATING operation adopts the heat pump type of absorbing the outdoor heat
to release to indoor side, so if the outdoor temperature drops, the HEATING
capacity may be lowered.
When the outdoor temperature is low, the air conditioner can be used together
with other heating devices.
For details, please refer to the operation manual of indoor unit.
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