Haier HRF-800DGS8 - Storing Freezing Food; Energy Saving Tips

SERVICE MANUAL
Model: HRF-800DGS8
15
Issue 2014-11-13
REF. Ref1411S025V1
Chapter 5 Control principal and related test functions
5-1. Control principle of fan motor
Control of F-fan:
When open any door, the F-fan will be off, after 10 minutes the F-fan will rework if any door still open；and if
all door is close，the F-fan will work in normal mode；
If setting the s.FRZ or s.cooling mode, F-fan speed is 1500RPM,In other mode, the speed from 1300 to
1500rpm for different condition like environment temp, setting temp and so on.
Control of C-fan:
C-fan is working in-phase with the compressor and at a mutative speed from 1100 to1400RPM for different
environment temp.
5-2. Defrost control
First power on and defrost error mode, the defrost circle is comp working time reach to 4 hours,
At the normal mode: The defrost circle time is alterable; it decided by open door, close door, open door
times, temperatures.
When open the door more times, the defrost circle is 7-12 hours;
When open the door less times, the defrost circle is 12-20 hours;
The longest cycle is 73 hours.
5-3. Self-testing function
1.Force start:Under locked mode, press Set-->Ref.Temp-->OK-->Frz.Temp”(A→D→B→C→A) one by
one within 5 sec. then press “Set”,and the REF and RFZ display icon will display T1,T1)
2.Forced defrost :Keep the current state ,and press “Set” ,T2 will be present, then enter forced
defrost mode.
3.Quit:Keep the current state, press “Set” ,then will be present T3→T4→back to normal display
control,and escape from test mode.
MODE WORKING CONDITION
Force start
1)R and F display areas：T1、T1；
2)Compressor start work；
3)Freezer FAN work with high votage；
Cooling FAN work with high votage；
4)defrost heater off；
5)REF air damper open；
Forced
defrost
1)R and F display areas：T2、T2；
2)Enter defrost mode：
compressor OFF
Freezer /Cooloing FAN OFF
Defrost heater work，
if the D-SNR ≥ 7℃，D HTR work 10 sec and then quit test 2 mode;
if the D-SNR＜7℃，D HTR will keep working until the D-SNR ≥ 7℃, and then quit test 2 mode;
3）REF air damper keep close