Morco GB24 - Boiler Troubleshooting Guide; Boiler Status Display Codes

9
SECTION 1 - USERS INSTRUCTIONS
1.20 POINTS FOR THE BOILER USER
Note. In line with our current warranty policy we would ask that you check through the Troubleshooting guide to identify any problems
externaltotheboilerpriortorequestingaserviceengineersvisit.Shouldtheproblembefoundtobeotherthanwiththeappliancewe
reservetherighttolevyachargeforthevisit,orforanypre-arrangedvisitwhereaccessisnotgainedbytheengineer.
YES
YES
NO HOT WATER
Check the mains switch (fused
spur) is turned on and ensure
switch mode control knob (C) is
in the summer or winter position
Is hot water coming out of the
hot water tap when turned on?
NO CENTRAL HEATING
Check the mains switch (fused
spur) is turned on and ensure
switch mode control knob (C) is
in the winter position
Does the boiler operate and
provide central heating?
Check the time settings on the
programmer are as you require
and adjust if necessary
Check the timer is in an
permanently “ON” position and
the room thermostat is turned up
NO HOT WATER OR
CENTRAL HEATING
Check the fused spur is turned
on and ensure switch mode
control knob (C) is in the winter
position
See boiler “Operation Modes”
and “Fault Codes” section
Does the boiler have a display
showing on the front control
panel?
See boiler “Fault Codes”
section. If ‘00’ is displayed
then follow warranty procedure
if your appliance if under
warranty, or contact a Gas
Safe Registered Engineer, or in
other countries a qualied and
competent Gas Installer, if out of
warranty
YES
NO
Contact a Gas Safe Registered
Engineer, or in other countries
a qualied and competent Gas
Installer
NO
See boiler “Operation Modes” and
“Fault Codes” section. If “00” is
displayed then contact a Gas Safe
Registered Engineer, or in other
countries a qualied and competent
Gas Installer
NO
Contact a Gas Safe Registered
Engineer, or in other countries
a qualied and competent Gas
Installer
1.21 TROUBLESHOOTING
1.22 OPERATION MODES
Note. The display alternates between display code and current temperature
DISPLAY CODE ON BOILER
DESCRIPTION
The boiler is in standby operation awaiting either a central heating call or hot water
demand.
The boiler has a call for central heating but the appliance has reached the desired
temperature set on the boiler.
The boiler has a call for hot water but the appliance has reached the desired
temperature set on the boiler.
The boiler is operating in central heating mode.
The boiler is operating in domestic hot water mode.
The boiler is operating in frost protection. Note that after the boiler has reached
temperature it will show “dH” for 60s whilst it also protects the DHW circuit.
The boiler mode knob (C) is in the off position, rotate fully clockwise for hot water and
central heating operation.
00
80
80
60
60
1 0
CH
CH
H
FP
--
H
†
†
†
†
†
† = temperature shown for example purposes only.