IDEAL LOGIC+ Combi 30 Installation And Servicing

64
Fault Finding
Fault Finding Fault Finding Fault Finding Fault Finding Fault Finding
Ideal Logic + Combi - Installation and Servicing
85 NO HW BUT CH ON
Does the display show “hot water” -
“temperature XXºC” - “high efciency”?
NO
YES
Are the ow rates correct as per Frame 2.
Is the wiring between the PCB and the diverter
valve motor connected?
YES
YES
Check diverter head fully engaged and clip
secured onto waterset.
YES
Is diverter stuck in the CH position
YES
Check and replace diverter valve motor head.
Is Boiler DHW OK?
NO
Change diverter Valve cartridge - rear section
NO
Adjust ow rates to achieve 35º
temp rise and check lter is not
blocked with debris.
NO
Reconnect wiring or
replace wiring harness if
no continuity.
NO
Re-engage diverter
head and secure clip to
wateset
NO
Replace PCB
Is the wiring connected
between PCB and DHW
sensor?
Remove the turbine, and
check for debris in the
turbine & lter. Replace
turbine if necessary. Is
DHW OK?
YES
NO
Re-connect wiring
NO
Replace turbine sensor
86 NO DISPLAY
Is there 230Vac to the boiler at L and N?
YES
NO
Supply power to the boiler
Is the wiring from the terminal block to the Main PCB
connected securely?
YES
NO
Connect the wiring from the terminal block to the
Main PCB securely.
Is the ribbon cable from the main PCB to the User
Interface PCB connected securely?
NO
Connect the ribbon from the main PCB to the User
Interface PCB securely
YES
Replace the
User Interface
PCB
Is ribbon cable damaged?
YES
Replace ribbon cable
NO
L
N

IDEAL LOGIC+ Combi 30 Specifications

General

Model	LOGIC+ Combi 30
Boiler Type	Combi
Central Heating Output	24.2 kW
Domestic Hot Water Output	30.3 kW
Efficiency Rating	94%
ErP Rating	A
Flow Rate	12.4 l/min
Dimensions	700x395x278 mm
Fuel Type	Natural Gas
Mounting	Wall Mounted
Warranty	7 years
Central Heating Pressure	3 Bar