Condition Of Ending Defrosting - Carrier 38LUVH025N-1 Service Manual

－6℃.
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While TCDI
----T4＜0℃,
st nd
If the 1 condition and 2 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 model. TCDE1=12℃, TCDE2=8℃ for other models.
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