Service manual

3-66
3.10.2.3 H-code
=The alarm is displayed when the control temperature does not decrease by 3˚C or more
every 4 hours during pull-down operation.
H001
=The alarm is displayed when the total time out of "in-range" reaches 2 hours. (Counting is
not performed during defrosting).
H002
=The alarm will be displayed when the total time below setpoint –1˚C reaches 2 hours.
=The alarm will be displayed when the total time below setpoint –2˚C reaches 2 hours.
H004
H003
t
4Hr
SP+1˚C
SP
If "t" is smaller than 3˚C, code "H001" appears.
※ This criteria (3˚C) can be adjusted from 1, 2, 5 or 10˚C.
Inside
Temperature
time
t1
> 2Hrs
H002
⇒
SP+1
SP
t2 t3
t1+t2+t3
> 2Hrs
H003
⇒
> 2Hrs
H004
⇒
SP–1
SP
SP–2
t
1'
t1 t2
t2'
t1+t2
t1'+t2'
Figure2
Figure3
Figure4