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User Guide

USER

In line with our current warranty policy we would ask that you 

check through the following 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.

FOR ANY QUERIES PLEASE RING THE IDEAL 

CONSUMER HELPLINE : 01482 498660

BOILER RESTART

 PROCEDURE -  To restart boiler 

press the restart button

WEATHER COMPENSATION

When the Weather Compensation option is fitted to the system 

then the central heating temperature knob (B) becomes 

a method of controlling room temperature.  Turn the knob 

clockwise to increase room temperature and anti-clockwise 
to decrease room temperature.  Once the desired setting has 
been achieved, leave the knob in this position and the system 

will automatically achieve the desired room temperature for all 

outside weather conditions.

BOILER FROST PROTECTION

The boiler is fitted with frost protection that operates in all 

modes, provided the power supply to the boiler is always 

turned on.  If the water in the boiler falls below 5ºC, the frost 

protection will activate and run the boiler to avoid freezing.  

The process does not guarantee that all other parts of the 

system will be protected. 

If a system frost thermostat has been installed, the boiler must 

be set in winter mode, [

 Ready or On

 ] for the frost protection to run. 

If no system frost protection is provided and frost is likely 

during a short absence from home it is recommended to leave 

the system heating controls or built in programmer (if fitted) 

switched on and running at a reduced temperature setting.       
For longer periods, the entire system should be drained.

BOILER RESTART

To restart the boiler, when directed in the listed fault messages 

(see section 4) press the “Restart” button.  The boiler will 

repeat its ignition sequence.  If the boiler still fails to start 

consult a Gas Safe Registered Engineer.

MAINS POWER OFF

To remove all power to the boiler the mains power switch must 

be turned off.

This appliance is fitted with a siphonic condensate trap 

system that reduces the risk of the appliance condensate 

from freezing.  However should the condensate pipe to this 

appliance freeze, please follow these instructions:
a.  If you do not feel competent to carry out the defrosting 

instructions below please call your local Gas Safe 

Registered installer for assistance.

b.  If you do feel competent to carry out the following 

instructions please do so with care when handling hot 
utensils.  Do not attempt to thaw pipework above ground 
level.

If this appliance develops a blockage in its condensate pipe, its 

condensate will build up to a point where it will make a gurgling 
noise prior to locking out displaying “Ignition Lockout” on the 

display.  If the appliance is restarted it will make a gurgling 

noise prior to it locking out displaying “Ignition Lockout” on the 
display.

To unblock a frozen condensate pipe;
1.  Follow the routing of the plastic pipe from its exit point on 

the appliance, through its route to its termination point.

  Locate the frozen blockage.  It is likely that the pipe is 

frozen at the most exposed point external to the building 

or where there is some obstruction to flow.  This could be 

at the open end of the pipe, at a bend or elbow, or where 

there is a dip in the pipe in which condensate can collect.  

The location of the blockage should be identified as closely 

as possible before taking further action.

2.  Apply a hot water bottle, microwaveable heat pack or a 

warm damp cloth to the frozen blockage area.  Several 

applications may have to be made before it fully defrosts.

  Warm water can also be poured onto the pipe from a 

watering can or similar.  DO NOT use boiling water.

3.  Caution when using warm water as this may freeze and 

cause other localised hazards.

4.  Once the blockage is removed and the condensate can 

flow freely, restart the appliance. (Refer to “To Start the 

boiler”)

5.  If the appliance fails to ignite, call your Gas Safe 

Registered engineer.

Preventative Solutions

During cold weather, set the central heating temperature knob 
(B) to “

MAX

”, (Remember to return to original setting once cold 

spell is over).

Place the heating on continuous and turn the room thermostat 
down to 15ºC overnight or when unoccupied. (Return to normal 

after cold spell).

SCAN

for video

1.3  POINTS FOR THE BOILER USER

1.4  FROZEN CONDENSATE DRAIN

Summary of Contents for LOGIC MAX HEAT2 H12

Page 1: ...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 USER GUIDE LOGIC MAX HEAT2 H12 H15 H18 H24 H30 October 2022 UIN 228292 A05 ...

Page 2: ...installed Due to the high efficiency of the boiler condensate is produced from the flue gases and this is drained to a suitable disposal point through a plastic waste pipe at the base of the boiler A condensate plume will also be visible at the flue terminal Safety Current Gas Safety Installation Use Regulations or rules in force It is the law that this appliance installation and any work carried ...

Page 3: ...Mode until either Ready or On is shown under the Boiler symbol If Tap Radiators symbols are shown then press Mode until Ready or On is shown under the radiator and tap symbol The boiler will fire and supply heat to the radiators Summer Conditions Domestic Hot Water only required If a Boiler symbol is shown on the display then central heating must be disabled at the timer or room thermostat If Tap ...

Page 4: ...liance is fitted with a siphonic condensate trap system that reduces the risk of the appliance condensate from freezing However should the condensate pipe to this appliance freeze please follow these instructions a If you do not feel competent to carry out the defrosting instructions below please call your local Gas Safe Registered installer for assistance b If you do feel competent to carry out t...

Page 5: ...ctions section Does the boiler have a display showing on the front control panel If fault persists contact Ideal Customer Service Helpline if your appliance is under warranty or a Gas Safe Registered engineer otherwise YES NO Contact a Gas Safe Registered Engineer 1 5 GENERAL INFORMATION Contact a Gas Safe Registered Engineer Contact a Gas Safe Registered Engineer NO YES NO MINIMUM CLEARANCES Clea...

Page 6: ...at 60 C Menu Mode Ready On Radiator Target 60 C Room Thermostat or Timer Off Preheat Active Summer Mode No Heat Demand Target 60 C Menu Mode Off On To Switch On Press Mode Button then On Ready Summer Mode DHW Demand Target 60 C Menu Mode On On at 60 C Winter Mode No Heat Demand Target 60 C Menu Mode Ready Off Radiator Target 60 C Room Thermostat or Timer Off Ready Off To Switch On Press Mode Butto...

Page 7: ...r Restart Menu Flow Thermistor Fault Contact Installer Menu Outside Sensor Fault Contact Installer Restart Menu Return Thermistor Fault Contact Installer Menu Fan Fault Contact Installer Menu PCB Fault Contact electricity provider Menu Low Mains Voltage Contact Installer Menu Flow Return Reversed Contact electricity provider Restart Menu Gas Valve Fault 1 Check if condensate pipe blocked frozen 2 ...

Page 8: ...deal Technical Helpline 01482 498663 Ideal Consumer Helpline 01482 498660 Ideal Parts 01482 498665 idealheating com Ideal Boilers Ltd pursues a policy of continuing improvement in the design and performance of its products The right is therefore reserved to vary specification without notice At Ideal Heating we take our environmental impact seriously therefore when installing any Ideal Heating prod...

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