Drazice OKC 100 NTR Manual de funcionamiento e instalación - Página 17

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Drazice OKC 100 NTR Manual de funcionamiento e instalación

2.9 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES

Potential failures – Table 6
FAILURE SYMPTOM
Water is cold
Water is not warm
enough
Temperature of water is
not corresponding
Water is constantly
dripping of the safety
valve
Table 6
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 water heater.

3 OPERATION OF THERMOSTAT

3.1 OPERATING MODES

3.1.1 SERVICING

Service devices of heaters of 50 to 200 l capacity are located under the transparent guard of the control
panel. (Figure 7).
LED
•
is on
•
is not on
•
is on
•
is not on
SOLUTION
•
the temperature set on the
thermostat is too low
•
heating element silure
•
no supply voltage
•
termostat silure
•
safety termostat shut off
probably due to failed
operation termostat
•
failure of one of the coils in
the element (contains 2)
•
defective thermostat
•
input pressure too high
•
faulty safety valve
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