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2.8 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES
FAILURE SYMPTOM
Water is constantly
dripping off the safety
valve
Table 3
Do not try to repair the failure yourselves. Seek either expert or service help. It does not take
much for an expert to remove the defect. When making a repair appointment, report the
type and serial number you find on the performance plate of your storage tank.
3 OPERATION OF THERMOSTAT
3.1 SERVICING
3.1.1 OPERATING DEVICES
Service devices are located in the upper part of the storage tank (Figure 8).
Electric circuit power indicator lamp
LED
LED is not on
Figure 8
SOLUTION
input pressure is too high
faulty safety valve
Thermostat knob
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