4.0
ERROR CODES
6
© Dimplex Boilers 2008
The boiler is in an ERROR state when there is an error code flashing on the back lit display.
CH = C
Central Heating
BCC = Boiler Chip Card
Press and release the RESET button, the control tries to iinitiate a restart if possible
ERROR CODE
DESCRIPTION
REASON
ACTION
RESET POSSIBLE
1
Overheated
CH Water temperature
•Check no air is in heat exchanger/CH system
appliance
greater than 105°C
•Check plate heat exchanger for blockages
Y
•Check CH thermistor
•Check system bypass is functional
4
No flame
No flame signal on ignition
•Check detection electrode/lead – electrode may require cleaning
•Check spark gap
•Check gas supply & pressure
Y
•Check flue system is connected properly
•Check condensate trap not blocked
•Check gas valve and/or lead
5
Flame loss
Loss of flame signal
•Check detection electrode/lead
during operation
•Check gas valve mains lead
6
Temporarily Water temperature •Check
overheat thermostat
overheated appliance
greater than 95°C
•Check no air is in heat exchanger/CH system
•CH system and hot water plate heat exchanger blockage
Auto Re-start after 1 minute
•Check CH thermistor
•Check system bypass is functional
7
Overheated appliance
Flue over temperature
•Check no air in heat exchanger
> 92°C
•Check flue thermistor
•Check flue system
Y
•Check pump
•Check PCB/X8 connector
11
Flame simulation
Flame detected when
•Check detection electrode/lead electrode may require cleaning
gas valve closed
•Check gas valve operation.
41
Water flow failure/
Low water pressure
•Check CH flow circulation
Flame for a short
Reversed sensors
•Check water pressure(> 0.5 bar)
period only
•Check pump/lead
Y
•Check expansion vessel
•Check flow and return sensors connected correct way around
42
Water flow failure/
Low water pressure
•Check no air in heat exchanger
Flame for a short
No flow
•Check CH flow circulation
period only
Dry run protection
•Check water pressure(> 0.5 bar)
Y
•Check pump/lead
•Check expansion vessel
Y
Y
1.0
USING THE BOILER
© Dimplex Boilers 2008
3
1.2
SYSTEM PRESSURE GAUGE
The normal operating water pressure is shown when the
needle is in the GREEN section of the gauge between 1 and 2
bar.
If the pressure drops too low the system will need topping up
via the filling loop.
If the pressure exceeds 3 bar the pressure relief valve will
operate and a fault may be indicated. Contact your installer
(see section 1.5).
0
1
2
bar
3
4
Red
Red
Green
1.3
CH - CENTRAL HEATING TEMPERATURE CONTROL
Switch shown in the OFF position.
Turn the knob clockwise to increase the temperature of the
central heating.
min =
30°
max =
80°
Min
Max
Fig. 3
Fig. 4
If you adjust the central heating temperature (set point), the
display will light and show the temperature you have set. After
10 seconds the display will revert to showing the current
boiler central heating temperature and the backlight will switch
off after a further 10 seconds.
1.4
CH CENTRAL HEATING
Decrease
Increase
Min
Max
Fig. 5
1.5
RE-PRESSURISING THE SYSTEM
To re-pressurise the system, locate the filling loop and connect
to the two valves. Open one valve completely then carefully
open the other valve until the pressure gauge shows 1.5 bar
(halfway round the green section of the dial). Shut both valves
and disconnect the filling loop.
0
1
2
bar
3
4
Red
Filling Loop
Red
Valve
NOTE: Disconnect filling
loop after re-pressurising
Green
Fig. 6
