PROBLEM
POSSIBLE CAUSE
Pump not working
Power failure
Pump control incorrectly installed
No voltage at the pump
Water not circulating in the sys-
Air in pipes
tem, even though pump working
Pipe system obstructed by valve
Fireplace pipe system blocked
Pressure drop in fireplace pipe
Pressure relief valve has triggered,
system
because the pump has stopped work-
ing due to power failure.
Leaking pipes
Pressure drop in water-heating
system
Picture 1. heating system components: tulikivi w10 heat exchanger and fireplace, pump and control unit, and hybrid heat water tank.
If the pump is not operating when you use the fireplace, check the operation of the pressure relief valve and expansion vessel. After any power cut, the fire-
place pipe circuit must be refilled and bled again if necessary.
Check any pump operation settings. Check temperature sensors.
Check the fuses.
If the above steps do not help, call in an HPAC professional or electrician.
Bleed the pipes in the fireplace water pipe system.
Open the valve.
Clean any filter that is present.
Flush the pipe system.
heck that the pressure relief valve and pump are operating normally. Refill the fireplace water pipe system.
Close the valves in the fireplace pipe system and switch off the pump, then check the pipe system to see where the leak is. Having found the leak, call in an
HPAC professional. If the leak is inside the fireplace, call a Tulikivi expert.
Check all pipes in the water-heating system. If a leak is found, call in an HPAC professional.
T1
SOLUTION
T2
9