Supplied By www.heating spares.co Tel. 0161 620 6677
RECTIFYING FAULTS
8 716 115 748 (2009/09)
56
7.5.2
PROGRAMMER FAULTS
Inadequate hot water outlet temperature (combi boiler)
Check
Action
1.
Does pump run?
B
Ensure the pump is not in ECO
mode (default after power ON
and after reset).
B
Un-plug connector from pump; is
voltage between terminal 1 and
terminal 3 on connector
230 V AC?
yes:
B
Try to start pump.
B
If not successful, change pump.
no:
go to 2
2.
Compare flow rate from boiler
with showed flow rate in service
function
6.d.
Are they equal?
yes:
go to 3
no:
B
Change turbine.
3.
B
Switch OFF the appliance.
B
Disconnect the boiler power con-
nection.
B
Un-plug connector from
Heatronic;
B
Reconnect the appliance power
connection.
B
Switch ON the appliance.
B
Is voltage between terminal 1 and
terminal 3 on Heatronic
230 V AC?
yes:
B
Switch OFF the appliance.
B
Disconnect the boiler power connection.
B
Change the lead assembly.
B
Reconnect the appliance power connection.
B
Switch ON the appliance.
no:
B
Make a note of the altered service settings (see
table 6 on page 18).
B
Switch OFF the appliance.
B
Disconnect the boiler power connection.
B
Change PCB control board.
B
Reconnect the appliance power connection.
B
Switch ON the appliance.
B
Restore service settings previously noted down.
Set room temperature not reached (DT10/DT20)
Check
Action
1.
Thermostatic valve(s) set too low?
yes:
B
Turn up thermostatic valve(s).
go to 2
no:
go to 2
2.
Set time periods for channel 1 at the
timer DT10/20 correct?
yes:
go to 3
no:
B
Correct the time periods for channel 1.
3.
Check the channel 1 at DT10/20
with the service function
6.E
. Is the
left digit set to 1?
yes:
go to 4
no:
B
Change DT10/20.
4.
CH flow temperature control on
boiler set too low?
yes:
B
Turn up CH flow temperature control.
go to 5
no:
go to 5
