Most Frequent Function Failures And Their Causes; Operation Of Thermostat; Operating Devices Of The Heater - Drazice OKHE ONE 30 Operating And Installation Manual

2.9 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES

FAILURE SYMPTOM
Water is cold
Water is cold
Water is not warm enough
Temperature of water is not
corresponding with the
temperature set on the control
Water is constantly dripping
off the safety valve
Table 4
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 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 DEVICES OF THE HEATER

Electrical installation cover for heaters:
OKHE ONE 30, OKHE ONE 50, OKHE ONE 80, OKHE ONE 100, OKHE ONE 120
Thermostat button
Figure 8
INDICATOR SOLUTION
• •
Light on The temperature set on the thermostat is too low;
heating element failure
• Light off • No supply voltage!
•
Thermostat failure
•
Safety thermostat shut off probably due to failed
operation thermostat
• Light on • Failure of one of the coils in the element (2x
1000W)
•
Defective thermostat
• •
Light off high input pressure
•
defective safety valve
Temeprature indicator
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