Haier HRF-663ISB2 Service Manual page 17

SERVICE MANUAL
Model: HRF-663ISB2
2.3.2 Compressor Control
(1) ON/OFF conditions of compressor
1. Powered on for the first time or after defrosting (F
SNR is higher than shutdown point)
2. F SNR reaches startup point
3. In fast freeze state
4. Refrigerator load in correspondence with condition 2
5. TEST MODE1 (PULL DOWN)
(2) The compressor will be shut down during operating if one of the following appears:
a) During defrosting or within 7 minutes after the finishing of defrosting.
b) Within 7 minutes after compressor shutdown.
c) Within 7 minutes after the previous state is restored manually from forced state.
2.3.3 Freezer fan control DC fan is adopted for the control of freezer fan.
DC fan is adopted for the control of freezer fan.
(1) ON/OFF conditions of freezer fan
2.3.4 Control of cooling fan
(1)A DC fan is adopted.
(2)The fan is operating synchronously with compressor
(3)Under DC control, the fan works at a constant speed of 1100RPM (11V).
2.3.5 Lighting control of refrigerator
(1)The light is on if the door is opened; the light extinguishes if the door is closed.
(2)The light extinguishes automatically if the door is opened for more than 7 minutes.
2.3.6 Air damper control of refrigerator
(1) R1 SNR controls the startup and shutdown of air damper in refrigerator compartment.
(2) The air damper is closed (in order to prevent the compartment from freezing) within 15 minutes from
the beginning to the finishing of defrosting.
(3) The air damper is closed and opened once upon initial power-on. It is controlled opened and closed
as per condition (1).
ON
Issue 2010-01
Rev.
OFF
1. After defrosting, F SNR is not higher than
shutdown point;
2. F SNR reaches shutdown point
3. In defrosting state;
4. Refrigerator load not in correspondence
with condition 2
5. TEST MODE2 (forced defrosting)
Ref1001S015V0
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