Conditions For Quitting Defrostng; Auxiliary Electric Heating Function - Hyundai HSH-I073NBE Service Manual

Air Conditioner Service Manual
accumulative total 30min, then the machine runs into defrosting and last for 8 min. if the accumulative
total less than 30min, but accord with one of the condition option 1-3 them the machine runs into
defrosting at the option 1-3 and the accumulative tota time restarts from 0.

Conditions for quitting defrostng

(1) The quitting conditions for option 1 and option 2, the machine quits from defrosting if any one
below condition met.
a. Defrosring time is over.
b.When it runs in defrosting for three minutes, the IPT indoor coil temperature rises 15 ° C or above
from the bottom point.
(2) The quitting conditions for option 3.
When OPT ≥ 20 ° C or defrosting for more than 10 min, then quit from defrosting.
(3) Defrosting process shown in Figure 4
Figure 4 Defrosting process

7) Auxiliary Electric heating function

(1)The default condition is automatic on/off the electric heating function.
(2) The conditions of auxiliary electric heating(all the following conditions must be met)
a. the compressor runs for more than 3min；
b. indoor fan runs normally；
c. not in defrosting state;
d. auxiliary electric heating is turned off for more than 30s。
e. ST-RT≥3°C;
f. RT﹤22°C;
g. IPT≤43°C;
(3) The conditions of stopping auxiliary electric heating(any one of the following conditions met, the
state stops)
a. the compressor stops
b. RT≥24°C;
c. IPT≥48°C
d. indoor fan stops。
e. running into sleeping function
5. Fan mode
1) Indoor fan motor control:
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