Flexiheat ThermoExtra 28 kW, Инструкция по установке и эксплуатации

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Page 37
7. Survey of possible malfunctions and irregularities in operation
7.1. General list
MALFUNCTION CAUSE ELIMINATION
- there is no voltage
on the control panel
at switching on
- there is no power supply from the
power net on one or more phases
- fuse 100mA on the control panel is
burned through
- there is no control power
- replace fuse 100mA and
check the cause of burning
- contact authorized service
personnel to resolve the
problem
- By switching on,
the switches on the
control panel display
the voltage, but the
boiler does not heat
- check the adjustment of the room
t hermostat,
- limiting thermostat is activated
- indicator of air presence in the boiler
blocked the operation,
- defective switch,
- heaters are burned through
- check the set temperature on
the room thermostat, replace
batteries, or the room
thermostat is faulty,
- vent the boiler in order to turn
off the lamp “air in boiler”
- temperature in
boiler is on desired
value, but radiators
do not heat
- circulation pump does not operate,
- air stopper on central heating
installation prevents circulation
- vent installation
- boiler does not
provide enough
heat
- one phase is missing on supply
- a part of heater is burned through
- in a three - phase system the three
different phases are not brought to the
boiler
- check fuses on the main
panel,
- contact authorized service
personnel to resolve the
problem
- the switcher can
be heard while
operating (it
buzzes)
radio and TV -
interferences
- poor voltage in the net
- defective relay
- contact authorized service
personnel to resolve the
problem
- boiler in
operation “roars”
- the system is not well vented ,
- defective heater
- vent the system
- contact authorized service
personnel to resolve
problem
- pressure in the
system varies
- defective expansion vessel,
- the vessel pressure is too low or too
high
- contact authorized service
personnel to resolve the
problem
- the actual
temperature in the
boiler is higher than
the desired
temperature and the
safety thermostat is
activated
- defective relays - contact authorized service
personnel to resolve the
exact source of the
problem
- RCCB switch
disconnects
(in home fuse box)
- defective heater,
- humidity on conductors,
- safety thermostat is activated
- check leakage,
- contact authorized service
personnel to resolve the
exact source of the
problem