Haier 2HUM18HC03/R2 Service Manual page 23

5.1.13 abnormal operation of indoor system
When the outdoor system operates, if the indoor system operation differs from the outdoor
system, the abnormal operation malfunction will be reported. 10s after the report, the indoor
system will be closed.
Outdoor system mode
5.1.14 Malfunction list resume.
Nothing is presented if there is no code list.
The malfunction display will automatically finish in 10 seconds.
The remote control only receives the sigals for stop. According to the signals, the malfunction
resume presentation finishes.
The resume restores after the power supply restores.
5.1.15 abnormality confirmation approaches.
1 indoor temperature sensor abnormality:
under the operation, the normal temperature ranges from 120 degree to -30 degree. When the
temperature goes beyond this range, the abnormality can be confirmed. If the temperature goes
back into the range, the system will automatically resume.
2 indoor heat interaction sensor abnormality:
under the operation, the normal temperature ranges from 120 degree to -30 degree. When the
temperature goes beyond this range, the abnormality can be confirmed. If the temperature goes
back into the range, the system will automatically resume.
3 indoor malfunction:
Out door malfunction: When the indoor system receives the outdoor malfunction codes, it will
store the code into E2 for the malfunction list resume. The indoor system will continue to operate
according to the original status, the malfunction code will not be revealed or processed.
4 transmission abnormality:
If the indoor system can't receive the outdoor system for 8 minutes, the communication
abnormality can be confirmed and reported and the outdoor system will be stopped.
5.1.16 Single indoor system operation
* Enter condition: First, set the high speed airflow and 30 centigrade set temperature, then press
the dormant keys for 6 times within 7 seconds, the system will feedback with 6 rings.
* After the system enters the separate indoor system operation mode, the indoor system will
2HUM18HC03/R2(DB)-SM
Indoor system mode
cooling
cooling
cooling
heating
heating
heating
heating
cooling
airflow
heating
airflow
cooling
20
Wiring diagrams
conflicts
yes
no
no
no
yes
yes
Domestic air conditioner