Toyotomi MTN-MTG A128FS Service Manual page 33

(1) The defrosting time is reached to the setting value.
(2) The compressor current reaches or exceeds I for 7 seconds.
DEFROST
I =6.5A for MTN A128FS model.
DEFROST
Defrosting action：
About the setting defrosting time:
(1) Condition 1 of defrosting;
If case B happens before case A and lasts till case A happens, the setting defrosting time is 10
minutes. Otherwise the defrosting time is 7.5 minutes.
(2) Condition 2 of defrosting.
The defrosting time is 10 minutes.
(3) No matter what condition of defrosting is, if the defrosting time keeps 7.5 minutes for 3 times, it will
th
be 10 minutes in the 4 defrosting.
2) Condition of ending defrosting:
If any one of the following items is satisfied, the defrosting will terminate and the machine will turn to
normal heating mode.
(1)T3 rises to be higher than TC2. TC2= 20 21k model;
(2)The machine has run for 10 minutes in defrosting.
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