Haier HSU-18HEA03/R2(DB)-I User Manual

68
Domestic air conditioner
HSU-18HEA03/R2(DB)-I
Service Diagnosis
7.3.9 High work-intense protection

Outdoor display LED1 flash 21 times
Method of
High work-intense control is activated in the heating mode if the temperature being sensed
Malfunction by the heat exchanger thermistor exceeds the limit.
Detection
Malfunction
Activated when the temperature being sensed by the heat exchanger thermistor rises above
Decision 68 ć twices in 30 minutes.
Conditions
Supposed
Ƶ Faulty electronic expansion valve
Causes Ƶ Dirty heat exchanger
Ƶ Faulty heat-exchange sensor
Ƶ Insufficient gas
Troubleshooting
* Caution Be sure to turn off power switch before connect or disconnect connector, or
else parts damage may be occurred.
YES
NO
the malfunction is
reported after the
machine has run for
some time?
Check room temperature and
pipe temperature sensor.
Electrify the machine again and turn it on with
the remote controller, check whether the wind
temperature is below 65ć
YES
NO
the indoor unit blows
poorly due to blocked
filters or poor condition
of the fan?
1) Clean the filters
2) Reinstall the fan.
measure whteher the pressure of the system
is too high
The system is over charged
with gas
YES

Haier HSU-18HEA03/R2(DB)-I Specifications

General

Brand	Haier
Model	HSU-18HEA03/R2(DB)-I
Category	Air Conditioner
Language	English