IO-752:2018/EN 05.12.2018
14
6.
Water heater overheats
water
Gas flow stabiliser incorrectly set
Regulate the stabiliser, acc. to p. 5.5
Incorrect gas composition
Check if the main burner, igniting burner and
water-gas fittings are adapted for the gas
currently in use
Too little water flow
Check the small water flow
– if water flow
exceeds 5,7dm3/min, it is recommended to
correct it by means of regulating screw
Control system mechanism of valve
head is mechanically damaged
Replace damaged elements
7.
Water heater does not
to stop operating after
turning off the water flow
Elements of water-gas fittings
are mechanically damaged
Replace fittings or damaged elements
8.
Explosive burner ignition
Too small flame on the igniting
segment
Pipe of igniting burner is choked
– clean it up or,
if necessary, replace
In water-gas fittings: gas flow canal to
igniting segment is choked
Damaged differential valve
Replace fittings or differential pressure valve
9.
Leakage occurring in gas
system of the water
heater
Gasket ring on the inlet to water-gas
fittings is damaged
Replace gasket with a new one
One of the gaskets on the outlet from
water-gas fittings or on the inlet to
burner is damaged
Replace gasket with a new one
Water-gas fittings is mechanically
damaged
Replace fittings or damaged elements
10.
Leakage occurring in
water system of the water
heater
Gasket on the inlet to water-gas
fittings is damaged
Replace gasket with a new one
Gasket on the outlet from water-gas
fittings is damaged
Replace gasket with a new one
One of the gaskets on heat
exchanger connections is damaged
Replace gasket with a new one
Water-gas fittings is mechanically
damaged
Replace fittings or damaged elements
11.
Water heater switches off
during its operating
(during taking the water)
Protection against flue gas inflow into
the room actuates
Check the limiter
– if damaged, replace
Check if vacuum in the chimney duct is correct
Protection against exceeding the
upper limit of the water temperature
actuates
Check the limiter
– if damaged, replace
Water heater overheats water
– action as above
12
Heat exchanger fins
get dirty in a short time
Wrong chimney draught
Check the chimney ducts
Yellow flame
Check the gas type
Polluted burner (wrong combustion)
Clean the burner
