Riello RTC Series User Manual

49
SHUTDOWN
5.9 Troubleshooting
PROBLEM CAUSE TROUBLESHOOTING TROUBLESHOOTING
The boiler does not reach its set tempera-
ture.
Heat exchanger dirty. − Clean the ue gas pipes.
Heat exchanger and burner mismatched. − Check specications and settings.
Insufcient gas ow burner. − Check and adjust the burner.
Control thermostat problem.
− Check the functioning of the aquastat.
− Check the temperature setting.
The boiler keeps shutting down, and the
control panel warning light comes on.
Control thermostat problem.
− Check the functioning of the aquastat.
− Check the temperature setting.
− Check the electrical wiring.
− Check the sensor bulbs.
No water supply. − Check the circuit pressure.
Air in the circuit. − Check the vent valve.
The boiler has reached the set tempera-
ture but the radiators are still cold.
Air in the circuit. − Bleed the circuit.
Pump malfunctioning. − Check/release the pump.
Problem with minimum temperature
aquastat (if present).
− Check the temperature setting.
There is a smell of fumes. Fumes are escaping into the air.
− Check that the boiler body is clean.
− Check that the ue pipes are clean.
− Check that the boiler, ue pipes and ue
gas exhaust stack are all properly sealed.
The safety valve keeps opening.
Excessive pressure in the circuit.
− Check the circuit pressure.
− Check the functioning of the pressure
reducer.
− Check the settings of the pressure reduc-
er.
Problem with heating system expansion
vessel.
− Check the efciency of the expansion
vessel.
There are traces of condensate on the rear
head.
Flue gas box seals.
− Check the seals between the rear head
and the ue gas box.

Riello RTC Series Specifications

General

Brand	Riello
Model	RTC Series
Category	Boiler
Language	English