Electra OU10-36 ST Service Manual download pdf (Page 77)

13-6

CONTROL SYSTEM

SM DNGRPM 1-E.4 GB

III.Cases for disabling thermistor short/disconnected detection

i. The detection of thermistor faults (a) and (b) above, are disabled when

Deicer Protection is started. The detection will be enabled again only after the

deicing is completed, and COMP has been restarted and operated for 30 sec.

ii. When all the following conditions are fulfilled:

a. 4.7K Ohm resistor is connected on the OCT

b. IFAN is OFF

c. Compressor is ON

d. ICT < -30 (disconnected)

IV.General features

1) Allowed (control target) range for RAT is SPT +/- 1

2) Whenever the unit is changed from Cool/Dry/STBY mode to Heat mode

or vice versa, the procedures below are followed:

Stop COMP for 3 min  Change RV state  Start COMP if necessary.

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Electra OU10-36 ST Service Manual Page 77