Friedrich FRESHAIRE PVH09K3FA, Руководство по обслуживанию и запасным частям, Страница: 93 / 109

93 PB
TROUBLESHOOTING
Check Thermistors
Gain Acces to Main PCB (logic) board
1. Remove front pane l (Figure 501).
2. Remove User Interface (Figures 502 thru 504).
3. Open electrical Control Box (Figure 505).
4. Using a multi meter ohm across applicaple pins for
the sensor you are checking.
5. Refer to thermistor charts for resistance and
temperature deviation.
5k Indoor ambient temperature (T1) Figure 719
5k Indoor coil temperature (T2) Figure 719
5k Outdoor coil temperature (T3) Figure 719
5k Outdoor ambient temperature (T4) Figure 719
50k Compressor discharge temp (T5) Figure 720
5k Indoor outlet air temperature (T6) Figure 19
6. Replace sensor if open or if resistance values
deviate by more than 10% of the listed values.
Figure 718 (Thermistor Connections on Main PCB)
Figure 718