Alarm Code #320, #321
Model CPE52, 53, 14, 15, 15V, 16
Failure Disconnection (#320) or Short circuit
(#321) of Ambient temperature sensor (TA)
Countermeasure
<< Cause -(2) >>
Defective TA sensor
< Check > ( Refer to Page F-21 )
Check if the TA temperature is out of –45 to 70°C range with the
personal computer display or the LCD.
Next remove the TA sensor from the terminal VRF and 58 on the
terminal block TB11,
and check the resistance between VRF and 58.
< Action >
Out of approx. 1 – 120 kohm range :
Replace the TA sensor.
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