Haier HRF-660S Service Manual page 17

SERVICE MANUAL
Model:HRF-660S
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).
(4) Force the air damper to be opened and closed once if it cannot be opened within 1 hour. After that,
decide whether open or close it according to R1 SNR.
(5)Heating elements of air damper and ice outlet are heated synchronously. continuous heating
(6) If the temperature still rises (or drops) within 10 minutes after opening or closing of air damper, open
or close it again.
(7) Heating element of dispenser (as well as heating element of inlet pipe) is off for 10 minutes and is
on for 30 minutes as a cycle.
2.4 Functional controls
2.4.1 Fast freeze
(1)Press fast freeze key to activate this function.
(2)Corresponding icon is displayed in fast freeze state; the icon extinguishes when fast freeze is
ended.
(3) During fast freeze, the selected settings of freezer or refrigerator compartment remain unchanged.
(4)During fast freeze, the setting in refrigerator compartment is adjustable, while the setting in freezer
compartment is not.
(5)The compress operates 3 hours continuously and then stops in fast freeze.
Issue 201001
Rev.
Ref1001S008V0
17