Operating Irregularities - Ideal Standard HELIS 2 GI710 2A Instrucciones De Instalación, Montaje Y Funcionamiento

FAULTS
The burner locks out
during the prepurge
phase.
The burner continues
to repeat the starting
cycle without going on
lock-out.
Burner tends to pull the
flame when switching
st nd
from 1 to 2 stage.

6.2 OPERATING IRREGULARITIES

FAULTS
The burner locks out
during operation.
Burner shut down.
POSSIBLE CAUSES
The air pressure switch does not
change over to the operational posi-
tion.
The flame exists.
The pressure test point (13, fig. 9,
page 9) is badly positioned.
The gas pressure in the gas-mains
lies very close to the value to which
the gas pressure switch has been set.
The sudden falling-off pressure at the
opening of the valve causes the
opening of the pressure switch. How-
ever this only temporarily, because
the valve immediately closes again,
so then does the pressure switch, be-
cause the pressure builds-up again,
causing the cycle to be repeated
over and over.
Output ratio between 1
greater than 1:2.
st
High air excess in 1 stage.
POSSIBLE CAUSES
Earth probe.
The flame disappears 4 times.
Air pressure switch opening.
Gas pressure switch opening.
The pressure switch is faulty, change it.
The air pressure is too low, (the head is
bad adjusted).
Faulty valves: replace them.
Place it in the right position according to
the instructions of this manual on page
9, chapter 4.2.
Lower and set the pressure switch.
Restore correct maximum ratio of 1:2,
st nd
and 2 stage
making sure 1
than the operating range's minimum.
Restore the correct air excess value (
min. = 1.3) see section "4.4 combustion
control".
Check the right position and if necessary
set it according to the instructions of this
manual.
Clean or replace the ionization probe.
Check the gas pressure in the network
and/or adjust the solenoid valve accord-
ing to the instructions of this manual.
The air pressure is too low, (the head is
bad adjusted).
The air pressure switch is faulty,
change it.
Check the pressure in the network and/or
adjust the solenoid valve according to the
instructions of this manual.
15 GB
SOLUTION
st
stage output is no less
SOLUTION
20017633
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