Service manual

49
The units run with T3 3 for 80 minutes and T3 keeps lower than TCDI+2 for more than 3
minutes. While TCDI=
6 .
----T4
0 ,
If the 1
st
condition and 2
nd
condition items are satisfied, then the program judges if T2 has decreased
more than 5
.When T2 has decreased more than 5 , enter the defrosting mode.
----No matter what value T4 is, if the machine runs with T3
3 for more than 120 minutes and T3
keeps lower than TCDI+4
for more than 3 minutes, the machine will enter defrosting mode no
matter if T2 drops more than 5
or not.
Condition of ending defrosting:
If any one of the following items is satisfied, the defrosting will finish and the machine will turn to
normal heating mode.
----T3 rises to be higher than TCDE1
.
----T3 keeps to be higher than TCDE2
for 80 seconds.
----The machine has run for 10 minutes in defrosting mode.
While TCDE1=15
, TCDE2=8 for 18k,24k models. TCDE1=12 , TCDE2=8 for other models.