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USER GUIDE
LOGIC MAX HEAT
2
H12 H15 H18 H24 H30
When replacing any part on this appliance, use only spare parts that you can be assured conform to the safety and performance
specification that we require. Do not use reconditioned or copy parts that have not been clearly authorised by Ideal Heating.
For the very latest copy of literature for specification and maintenance practices visit our website idealheating.com
where you can download the relevant information in PDF format.
October 2022
User Guide
3
UIN 228292 A05
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Table of Contents
Related Manuals for Ideal Heating LOGIC MAX HEAT2 H15
Summarization of Contents
Boiler Operation
Operation Modes
Explains different operating modes like Winter, Summer, and Boiler Off.
Control of Water Temperature
Details how to adjust central heating radiator temperature using the knob.
Efficient Heating System Operation
Describes how the condensing appliance optimizes gas consumption and efficiency.
Frozen Condensate Drain
Preventative Solutions
Offers advice for preventing condensate pipe freezing during cold weather.
General Information
Minimum Clearances
Specifies required spatial clearances around the boiler for installation and servicing.
Bottom Clearance
Details the minimum required clearance below the boiler casing.
Service Request Function
Explains the on-screen message indicating when a service is due.
Escape of Gas
Provides immediate safety instructions in case of a suspected gas leak.
Cleaning
Instructions on how to clean the boiler unit safely and effectively.
Maintenance
Recommends the frequency and method for annual servicing by a qualified engineer.
Troubleshooting
No Hot Water
Guides users on diagnosing issues when there is no hot water supply.
No Central Heating
Guides users on diagnosing issues when central heating is not functioning.
No Hot Water or Central Heating
Guides users on diagnosing issues when neither hot water nor central heating is available.
Display Functions - Normal Operation Mode
Without Outside Sensor
Details display screens and functions when no external temperature sensor is connected.
With Outside Sensor
Details display screens and functions when an external temperature sensor is connected.
Boiler Frost Protection
Explains the display indication for the boiler's frost protection mode.
Service Required
Indicates when the appliance requires professional servicing and provides contact information.
Display Functions - Fault Messages
Overheat Lockout
Details the steps to resolve an overheat lockout error code.
Outside Sensor Fault
Guides on troubleshooting issues related to the external temperature sensor.
Spare PCB Not Set
Indicates that the spare Printed Circuit Board is not configured correctly.
Ignition Lockout
Provides steps to take if the boiler fails to ignite after multiple attempts.
Return Thermistor Fault
Describes a fault related to the return water thermistor.
No Water Flow
Guides on troubleshooting issues indicating a lack of water flow within the system.
Flame Loss
Troubleshooting steps for a flame loss fault.
Fan Fault
Details a fault related to the boiler's fan system.
Flow/Return Reversed
Guides on resolving a fault where flow and return pipes are incorrectly connected.
Too Many Restarts
Indicates a fault condition resulting from excessive boiler restarts.
PCB Fault
Guides on diagnosing a fault with the boiler's main control board.
Gas Valve Fault
Details a fault related to the gas valve operation.
Flame On Before Gas On
Troubleshooting for a fault where the flame ignites before gas is supplied.
Low Mains Voltage
Guides on troubleshooting issues related to low electrical supply voltage.
Blocked Flue/Condensate
Troubleshooting steps for a blocked flue or condensate pipe.
Flow Thermistor Fault
Describes a fault related to the flow water thermistor.
Room Thermostat Fault
Guides on diagnosing issues with the room thermostat or its batteries.
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