User Manual

Problems | 17
6 720 608 992 (2011/12)
8Problems
8.1 Problem/cause/solution
Assembly, maintenance and repairs must be performed
by qualified technicians only. The following chart offers
solutions to possible problems.
Problem Cause Solution
The heater does not ignite and
digital display is turned off.
Slow and difficult ignition of the
burner.
Red LED in switch flashes.
Switch turned off.
Reduced water flow.
Reduced water flow.
Check switch position.
Call a qualified technician.
Call a qualified technician.
Water at low temperature. Check the temperature selector position
and adjust it according to the desired
water temperature.
Water is not heated, no flame. Insufficient gas supply. Gas
Cylinders may be empty
If sufficient gas appears to be available
call a qualified technician.
Digital display shows “E9”.
Digital display shows “A4”.
Temperature limiter has tripped
Flue gas safety device has tripped
Wait 10 minutes and restart the heater.
If the problem persists, call a qualified
technician.
Vent the area. Wait 10 minutes and
restart the heater. If the problem
persists, call a qualified technician.
Incorrect temperature
information in the appliance
digital display.
Insuficient contact of the
temperature sensor.
Call a qualified technician.
Digital display shows “E1”. Water temperature sensor has
tripped (outlet water temperature
above 85 °C).
Reduce the water temperature using the
gas and/or temperature adjustment
selector. If the problem persists, call a
qualified technician.
Digital display shows “A7”. Temperature sensor incorrectly
connected.
Temperature sensor defective.
Call a qualified technician.
Call a qualified technician.
Digital display shows “F7” or
“E0”.
Blocked Heater. Turn the heater off and on, if the
problem persists, call a qualified
technician.
Table 7