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

HSU-18HEA03/R2(DB)-I
Funcitions and Control
Domestic Air Conditioner
19
If a single machine causes defrosting, the other machines all involve in defrosting.
D. The conditions of withdrawing from defrosting
The defrosting operation will change to heating operation, if any of the following conditions is
VDWLV¿HG
(1) The temperature of the outdoor heat exchanger is continuously over 7°C for 80 seconds.
(2) The temperature of the outdoor heat exchanger is continuously over 12°C for 5 seconds.
(3) Continuously run defrosting for 11 minutes (56 digits in EEPROM can be adjusted).
E. When satisfying the conditions of withdrawing from defrosting, the machine works as the
followings:
The compressor stops, the outdoor fan is started, and the four-way valve is closed, after 60 seconds the
compressor runs according to the starting process.
5.2.5 Protection function
5.2.5.1 TTC high temperature-preventing protection
Once the machine is started, it can run TTC overheating protection of air-blowing, but air-blowing sensor
malfunction must alarm after 4 minutes during which the compressor is started (during the course of self-
detection, there’s no such limitation)
Sensor detection PHWKRGV 100 times (one cycle of procedure run is one time, and about 5ms, detection
method for each WLPH continuously sampling for 8 times, then order them and take the mean value of the
middle 2 values), take the mean value.
TTC
A
bnormal stop
117
ecreasing the frequency rapidl
y
1HZ/second
112
Decreasing the frequency slowly (1HZ/10seconds)
The frequency doesn’t change.
ncreasing the frequency
1HZ/1second
TC>=117°C lasts for 20 seconds. Overheating protection of air-blowing, alarm malfunction to the indoor,
others don’t last.
5.2.5.2 TC high temperature-preventing control of the indoor heating unit
Tpg_indoor is the highest value of the effective indoor unit (start it and it is in accord with the running
state).
The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If the temperature
is higher than 55°C, decrease the rotate speed of the compressor and do the high temperature-
preventing protection of the indoor heat exchanger; if the temperature of the indoor heat exchanger is
lower than 47°C, recover to the normal control.
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D
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Haier HSU-18HEA03/R2(DB)-I Specifications

General

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