Heating Unit Operation; Inspection, Maintenance; Most Frequent Function Failures And Their Causes - Drazice TJ 6/4“ -2 Operating And Installation Manual

2.3 HEATING UNIT OPERATION

Simple control consists only of setting the desired temperature on the control thermostat knob. The setting
range is 5 -74°C. The recommended set temperature is 60°C approximately. The * symbol – fuse against
freezing 5-8°C. When the control light is on, the element is running.

2.4 INSPECTION, MAINTENANCE

Maintenance involves decalcification of the heating element in certain time intervals selected by water
hardness at the place of use. Damage to the heating element due to calcareous sediments is not accepted
by the manufacturer as a reason for complaint.
Notice: If the heating unit is used in an accumulation heater, the wear of the anode rod of
the heater may deteriorate. We recommend checking it more frequently. Consider the
instructions of the manufacturer regarding the exchange of the anode rod.

2.5 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES

Table 2 Other potential failures
FAILURE SYMPTOM
The element operation
light is not on.
If the heating element
fails, there is no
indication and the
control light is on even
when the thermostat is
active.
Table 2
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.
–
SOLUTION

The safety fuse is non-self-returning.

It is activated by pressing a button on the
thermostat body.

Have the heating unit repaired by an
authorised company.
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