41
INITIAL LIGHTING
THE DISPLAY
The user control has one neon and one display to inform
the user about the status. The display will show the status
of the boiler. The neon will show the status of the ame.
If no ame is detected the neon is off. When the ame is
detected the neon will be lit permanently.
Below is a list with display function in normal operation.
Standby, no demand for heat present.
Boiler is active for heating.
Boiler is active for boiler frost protection.
Boiler is in lockout for a specic error. Display will be
blinking, alternating with a number or letter to show
which error is detected.
Boiler has a fault for a specic error. Display will be
blinking, alternating with a number or letter to show
which error is detected.
Note: Boiler frost protection - boiler res if temperature is
below 5 degrees C.
Legend
A. CH temperature control
B. Mode Control Knob
C. Boiler Status
D. Burner ‘on’ indicator
E. Gas Inlet Pressure Test Point
F. Gas Service Cock
1. Check that the system has been lled and that the boiler is not
airlocked.
Note.
It is important the burner is not operated before the system is fully
vented of air. If it is necessary to operate the system pump to
assist venting of the air this must be done with the gas service cock
turned off.
2. Ret the boiler front panel. Refer to Frame 46.
3. Check that the electrical supply is OFF.
4. Check that the boiler mode control knob (B) is off.
5. Check that the gas service cock (F) is OPEN.
6. Slacken the screw in the inlet pressure test point (E) and connect
a gas pressure gauge via a exible tube.
7. Switch the electricity supply ON and check all external controls
are calling for heat.
CENTRAL HEATING
8. Set the CH temp control (A) to max and turn the mode control knob
(B) to ON. The boiler control should now go through its ignition
sequence until the burner is established.
9. If the boiler does not light code
will be displayed. After
5 attempts the boiler will lock out and display fault code
constantly. Reset the boiler (Refer to Frame 43). The boiler will
repeat its ignition sequence. If reset occurs 5 times within 15
minutes then
will be shown. If power is removed this will be
reset.
When the burner is established the BLUE ‘Burner On’ neon (D)
will be illuminated, the LED display (C) will show status
.
10. Ensure that with the boiler operating the dynamic gas pressure
is able to obtain maximum output. Refer to Table 2.
IMPORTANT
The gas input to the burner is regulated by the gas valve
NOT user-
adjustable. Any interference to sealed settings on the gas
valve will adversely affect operation and render our
warranty void.
For additional gas supply information refer to “Gas Supply”
on page 8.
Note. The boiler incorporates a fan overrun cycle which
MUST NOT be prematurely interrupted by isolation of the
mains electricity supply.
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