Ideal Boilers LOGIC CODE COMBI ESP1 User Manual Download Page 8

5 Boiler Resets in 15 minutes

1. Turn electrical supply to boiler off and on.
2. If the boiler fails to operate please contact Ideal (if under warranty) or alternatively 

a Gas Safe Registered Engineer if outside of the warranty period.  In IE contact a 

Registered Gas Installer (RGII).

False Flame Lockout

Restart the appliance - if the boiler fails to operate then please contact Ideal (if under 

warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty 

period.  In IE contact a Registered Gas Installer (RGII).

DISPLAY CODE ON BOILER

DESCRIPTION

Low Water Pressure

ACTION

Check system water pressure is between 1 & 1.5bar on the system pressure gauge.  To 

re-pressurise the system see Section 3.  If the boiler still fails to operate then please contact 

Ideal (if under warranty) or alternatively a Gas Safe Registered Engineer if outside of the 

warranty period.  In IE contact a Registered Gas Installer (RGII).

Check system water pressure is between 1 & 1.5bar on the system pressure gauge.  

To re-pressurise the system see Section 3.  If the boiler fails to operate then please contact 

Ideal (if under warranty) or alternatively a Gas Safe Registered Engineer if outside of the 

warranty period.  In IE contact a Registered Gas Installer (RGII).

8.  FAULT CODES

Flow Temperature Overheat 

or No Water Flow 

Flow/Return Differential > 

50°C

If the boiler fails to operate then please contact Ideal (if under warranty) or alternatively 

a Gas Safe Registered Engineer if outside of the warranty period.  In IE contact a 

Registered Gas Installer (RGII).

Rotate all knobs fully clockwise, turn boiler power off and on then press restart

Diverter Valve in mid-position 

for service

Flame Loss

Ignition Lockout

1. Check other gas appliances in the house are working to confirm a supply is present in 

the property.

2. If other appliances do not work or there are no other appliances, check the gas supply 

is on at the meter and/or pre payment meter has credit.  If the boiler fails to operate then 

please contact Ideal (if under warranty) or alternatively a Gas Safe Registered Engineer 

if outside of the warranty period.  In IE contact a Registered Gas Installer (RGII).

1. Check condensate pipe for blockages (refer to Section 4).

2. Check other gas appliances in the house are working to confirm a supply is present in 

the property.

3. If other appliances do not work or there are no other appliances, check the gas supply 

is on at the meter and/or pre payment meter has credit.  If the boiler fails to operate then 

please contact Ideal (if under warranty) or alternatively a Gas Safe Registered Engineer 

if outside of the warranty period.  In IE contact a Registered Gas Installer (RGII).

Fan Fault

Restart the appliance - if the boiler fails to operate then please contact Ideal (if under 

warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty 

period.  In IE contact a Registered Gas Installer (RGII).

Flow Thermistor

Restart the appliance - if the boiler fails to operate then please contact Ideal (if under 

warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty 

period.  In IE contact a Registered Gas Installer (RGII).

Return Thermistor

Restart the appliance - if the boiler fails to operate then please contact Ideal (if under 

warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty 

period.  In IE contact a Registered Gas Installer (RGII).

Outside Sensor Failure

Restart the appliance - if the boiler fails to operate then please contact Ideal (if under 

warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty 

period.  In IE contact a Registered Gas Installer (RGII).

Low Mains Voltage

Contact a qualified electrician or your electricity provider.

Unconfigured PCB

Unconfigured PCB.  Please contact Ideal (if under warranty) or alternatively a Gas Safe 

Registered Engineer if outside of the warranty period.  In IE contact a Registered Gas 

Installer (RGII).

F 1

F 5

F 9

L 1

L 2

L 6

L C

F U

     U

L 5

L 9

F 2

F 3

F 6

F 7

F 4

L 4

Negative Differential 

Flow/Return Thermistor

If the boiler fails to operate then please contact Ideal (if under warranty) or alternatively 

a Gas Safe Registered Engineer if outside of the warranty period.  In IE contact a 

Registered Gas Installer (RGII).

F A

Summary of Contents for LOGIC CODE COMBI ESP1

Page 1: ...hat have not been clearly authorised by Ideal Boilers For the very latest copy of literature for specification and maintenance practices visit our website www idealboilers com where you can download the relevant information in PDF format For alternative languages in our User Guides please visit our website www idealboilers com April 2019 UIN 222364 A01 USER GUIDE LOGIC CODE COMBI ESP1 26 33 38 ...

Page 2: ...o the current ETCI rules for electrical installation It is essential that the instructions in this booklet are strictly followed for safe and economical operation of the boiler ELECTRICITY SUPPLY This appliance must be earthed Supply 230 V 50 Hz The fusing should be 3A IMPORTANT NOTES This appliance must not be operated without the casing correctly fitted and forming an adequate seal If the boiler...

Page 3: ...ler fails to light after five attempts the fault code will be displayed refer to Fault Code page OPERATION MODES Winter Conditions Central Heating and Domestic Hot Water required Set the mode knob C to winter The boiler will fire and supply heat to the radiators but will give priority to domestic hot water on demand Summer Conditions Domestic Hot Water only required Set the mode knob C to summer S...

Page 4: ...nob towards the MAX position to meet heating requirements This will depend on the house and radiators used Reducing the room thermostat setting by 1ºC can reduce gas consumption by up to 10 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...

Page 5: ... 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 Light the boiler 5 If the appliance fails to ignite call your Gas Safe Registered en...

Page 6: ...the time settings on the programmer are as you require and adjust if necessary Check the programmer internal or external to the boiler is in an ON position and the room thermostat is turned up NO HOT WATER OR CENTRAL HEATING Check the mains power is turned on and ensure mode knob C is in the winter position See boiler Operation Modes and Fault Codes section Does the boiler have a display showing o...

Page 7: ...he 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 7 NORMAL OPERATION DISPLAY CODES The boiler mode knob C is in the off position rotate fully clockwise for hot water and central heating operation FP 54 54 00 54 54 o C o C o C o C FOR ANY QUERIES PLEASE RING THE IDEAL CONSUMER HELPLINE 01482 49866...

Page 8: ...arranty or alternatively a Gas Safe Registered Engineer if outside of the warranty period In IE contact a Registered Gas Installer RGII 1 Check condensate pipe for blockages refer to Section 4 2 Check other gas appliances in the house are working to confirm a supply is present in the property 3 If other appliances do not work or there are no other appliances check the gas supply is on at the meter...

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