Haier HSU-09H03/(BP)1 Service Manual page 30

Within 30 minutes after upper limit of high-load acting, the high-load protection will alarm if the upper limit of
high-load acts once more.
Outdoor ambient temperature sensor abnormal。
Displayed as thermistor abnormity mode respectively after outdoor unit received the abnormal error code signals
of defrosting, discharge temperature, control board and outdoor thermistor.
Resetting operation automatically after outdoor unit received the signal of temperature sensor abnormity released.
If abnormity appears, the low-load protection shall be released.
1.1.8.4 Control action of outdoor unit protection。
Displaying abnormity confirmation mode since outdoor unit received the following error code:
Overhigh temperature protection of air discharge pipe, DC peak current, CT wiring disconnected, AC over-current,
overhigh temperature protection of control board, low-voltage protection and compressor abnormal rotation.
1.1.8.5 Transmission abnormity
According to the communication between indoor unit and outdoor unit, it is considered abnormal if outdoor unit
cannot receive signals within 20 seconds after indoor unit's sending. (Except for the first 2 minutes after power
on).
It is regarded as transmission abnormity after outdoor unit receives the signal of transmission abnormity.
Transmission abnormity is released by running stopping.
1.1.8.6 EEPROM
When power on, EEPROM is abnormal if the control parameters and the checking total amount are not identical.
EEPROM is considered abnormal since the outdoor received the abnormal signal of EEPROM.
At the same time, remote control and emergency running are not accepted.
It is only can be released by power blackout.
List of error code
Abnormity mode
Abnormity of indoor
thermistor
Abnormity of thermal
conversion thermistor
Abnormity of defrosting
thermistor
Abnormity of
discharging thermistor
Abnormity of control
board thermistor
Abnormity of module
thermistor
Abnormity of outdoor
thermistor
Transmission abnormity
Domestic Air Conditioner
Error display
Powe Time Run
r r ning
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Model:
Autom
Indo Outd
atic
or oor
restore
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HSU-09H03/(BP)1
HSU-12H03/(BP)1