Drazice OKH 125 NTR/HV Manuale operativo e di installazione - Pagina 15
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2.8 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES
FAILURE SYMPTOM
Temperature of water is
not corresponding with
the set value
Water is constantly
dripping off the safety
valve
Table 3
Do not attempt to repair the failure yourselves. Seek either expert or service help. It does
not take much for an expert to remove the defect. When organizing repair state the model
designation and serial number that is to be found on the power plate of your water tank.
3 OPERATION OF THERMOSTAT
3.1 SERVICING
3.1.1 OPERATING DEVICES OF THE TANK
Thermostat's control panel
INDICATOR
•
LED is not on
Figure 8
•
Defective thermostat
•
high input pressure
•
defective safety valve
Thermostat knob
SOLUTION
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