Operation Manual

18
CODE
DESCRIPTION FAULT
0
Repeating 5 second
flashes only with no 1
second flashes
Lack of gas or ignition problems
Flame supervision failure
Burner on but flame indicator off
Minimum burner pressure too low
1
One 1 second flash
Air pressure switch failure / Fan failure
2
Two 1 second flashes
Water Pressure below 0.7 bar
3
Three 1 second flashes
Hi limit thermostat failure
4
Four 1 second flashes
Printed circuit board failure
5
Five 1 second flashes
Flame supervision failure, indicator light on,
burner off
6
Six 1 second flashes
Water overheating
7
Seven 1 second flashes
Control panel failure
9
Nine 1 second flashes
Gas valve control circuit failure
10
Ten 1 second flashes
Domestic hot water thermistor failure
12
Twelve 1 second
flashes
Central heating thermistor failure
EXAMPLES:
Fault 4, P.C.B. failure, would display the following sequence of the red neon:
5 seconds 1 sec
1 sec 1 sec 1 sec 5 seconds
N.B. The sequence repeats itself until either the reset button is depressed or the fault is rectified. Some faults
require the component temperature to return to within operating range before reset. Also some faults may
take up to 3 minutes before lockout is displayed. E.G. Fan failure/ water overheating.
12/7/04