Samsung AM080FX A Series - Page 408

Test Operation
Samsung Electronics 427
7) Cycle status
∙ What to inspect: Outdoor unit's operation cycle status
∙ Error code: None (“NG” is only indicated in the result report)
∙ How to determine error: View the DSH status during operation.
∙ Perform inspection according to the steps shown below.
■ Precautions
- To replace a component or inspect the PBA, be sure to cut off the power supply first.
If inspection must be performed with the power supply on, exercise extra care to prevent electric shock.
Take corrective measures.
Take corrective measures.
Replace the thermistors.
Take corrective measures.
Ventilate the room.
Take corrective measures.
Does the result
of Auto Trial Operation show that all
the inspection items other than the cycle
status are normal?
Are
the connectors of the discharge
thermistor and Compressor Top thermistors
properly connected to
the PBA?
Are all
the thermistors attached to
the correct positions?
Are the resistance values
* for the discharge thermistor and Compressor Top
thermistors normal?
Has the indoor unit been
in the Thermo On status during the Auto Trial
Operation?
Is the operation cycle normal?
Perform Trial Operation (cooling/heating)
- See the instructions on Key operation modes.
Perform Auto Trial Operation again.
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
* How to measure
Resistance Disconnect the therm-
istor connectors from the PBA
and then measure the resistance
between the terminals of the con-
nectors.
[Resistance values for the discharge
thermistor and the Top thermistors]
Temperature
(℃ )
Resistance
(KΩ)
130 8.9
120 11.2
100 18.5
80 32.0
60 59.0
25 200.0
20 242.0
10 362.0
0 553.0
9-1 Auto Trial Operation (cont.)
9-1-3 How to resolve NG items (cont.)