Centrometal El-Cm eBasic 6kW Manualbook For Installation, Handling And Maintenance page 34

10. Troubles and
troubleshooting
Troubleshooting on regulations and hydraulics must
be done by an authorised firm
For repairs use only original spare parts
TROUBLE
Boiler does not react
after turn on of main
switcher
Boiler does not heat or
insufficiently
heat/heating pump
works
Boiler heats but it is
very noisy
Boiler turns on quickly
Great oscillations of
working pressure
Table 8: Troubles and troubleshooting
DESCRIPTION
Display does not react,
other components do
not work
All on display are within
recommended values
but boiler does not
make hot water
Higher level of noise
during work
Reaches temperature
too quickly and turns on
Too fast and too big
changes of working
pressure
CAUSE
 Boiler is out of power supply
 Fuses on bottom plate are off
 Vanishing of managing phase
 Damage of main fuse ON/ OFF
 Lack of 1 or 2 phases
 Small power of boiler
 Some relay damaged
 Some heater damaged
 Air in the system
 Small water flow
 Possible carbonate layer on
heater
 Valves below the boiler off
 Pump fuse stop to work
 Pump jammed
 Pump inaccurate
 One valve off
 Expansion dish pressure
inadequate
 Inaccurate dish
Troubles and troubleshooting
MEASURE
 Provide power supply
 Turn on fuses
 Check if fuses have three
phases on output
 Change damaged part
 Check all three phases
 Check set power of boiler
 Change damaged part
 Change damaged part
 Check if the system is air
vented and vent it
 Check valves below boiler and
open it
 Clean filter below boiler
 Take out heaters and clean it
(this is not included in claims
during warranty period)
 Open valves
 Change inaccurate part
 Start pump rotor
 Change inaccurate part
 Open the valve
 Check pressure in expansion
dish and if needed set dish
pressure adequately
 Change inaccurate part