Ideal Heating Heat Pump Error Codes

Complete diagnostic guide for Ideal Heating heat pumps in the United Kingdom.

Water Pressure and Flow Problems

Error codes for Ideal Heating heat pumps related to water pressure and flow problems.

Error Code	Meaning	Possible Causes	Solutions
F1	Low water pressure	Water pressure in system too low Water loss due to leakage Bleeding problems in system Defective expansion vessel Normal evaporation over time	Increase water pressure to 1.0 to 1.5 bar Check system for leaks and repair Bleed heating circuit completely Check expansion vessel Contact qualified service if problem persists

Ignition and Flame Errors

Error codes for Ideal Heating heat pumps related to ignition and flame monitoring problems.

Error Code	Meaning	Possible Causes	Solutions
F2	Flame loss	Problems with gas supply Ignition error Flame monitoring sensor defective Blocked burner Problems with ignition electrode	Check gas supply Reset boiler Check and clean ignition electrode Check burner for blockages Check flame monitoring sensor If problem persists, contact qualified service

Fan and Ventilator Errors

Error codes for Ideal Heating heat pumps related to fan and ventilator problems.

Error Code	Meaning	Possible Causes	Solutions
F3	Fan error	Fan motor defective Fan blocked Fan wiring damaged Control board defective Problems with fan control	Reset boiler Check fan for blockages Test fan motor for function Check wiring If error code appears again, contact qualified service

Sensor and Temperature Errors

Error codes for Ideal Heating heat pumps related to sensor and temperature measurement problems.

Error Code	Meaning	Possible Causes	Solutions
10	Outdoor sensor error	Outdoor temperature sensor defective Sensor not properly connected Cable connection interrupted Sensor damaged or wet	Check outdoor temperature sensor for damage Check wiring for proper connection Check sensor for moisture Test sensor with multimeter Replace sensor if defective
26	Header thermistor error	Header thermistor defective Sensor not properly connected Cable connection interrupted	Check header thermistor for function Check wiring Replace sensor if defective
33	Flow thermistor (internal) error	Flow thermistor defective Sensor not properly connected Cable connection interrupted	Check flow thermistor for function Check wiring Replace sensor if defective
44	Return thermistor error	Return thermistor defective Sensor not properly connected Cable connection interrupted	Check return thermistor for function Check wiring Replace sensor if defective
50	Hot water thermistor error	Hot water thermistor defective Sensor not properly connected Cable connection interrupted	Check hot water thermistor for function Check wiring Replace sensor if defective
F4	Temperature sensor error	Temperature sensor defective Sensor not properly connected Cable connection interrupted Sensor damaged Control board defective	Check temperature sensor for function Check wiring for proper connection Test sensor with multimeter Replace sensor if defective Contact qualified service
F5	Overheating protection activated	System detected overheating Insufficient flow Blocked heat exchanger Problems with cooling Pump blocked	Allow system to cool down Check and increase flow rate Check heat exchanger for blockages Check pump for blockage Check cooling system Contact qualified service if problem persists

Thermostat and Control Errors

Error codes for Ideal Heating heat pumps related to room thermostat and control problems.

Error Code	Meaning	Possible Causes	Solutions
60	Room thermostat 1 error	Room thermostat 1 defective Communication error with room thermostat 1 Wiring damaged	Check room thermostat 1 for function Check wiring Replace thermostat if defective
65	Room thermostat 2 error	Room thermostat 2 defective Communication error with room thermostat 2 Wiring damaged	Check room thermostat 2 for function Check wiring Replace thermostat if defective

System and Communication Errors

Error codes for Ideal Heating heat pumps related to system errors and communication problems.

Error Code	Meaning	Possible Causes	Solutions
81	LPB short circuit/communication error	Short circuit in LPB bus Communication error in LPB system Wiring damaged	Check LPB bus for short circuit Check wiring Check communication connections Contact qualified service
82	LPB address collision error	Multiple devices with same address Configuration error	Check device addresses Check configuration Reassign addresses if necessary
83	BSB short circuit error	Short circuit in BSB bus Wiring damaged	Check BSB bus for short circuit Check wiring Contact qualified service
84	BSB address collision	Multiple devices with same address Configuration error	Check device addresses Check configuration Reassign addresses if necessary
100	Two time master error	Multiple devices configured as time master Configuration error	Check configuration Set only one device as time master
102	Clock without backup error	Clock without backup battery Battery empty	Check backup battery Replace battery if necessary
126	7093 hot water setpoint error	Hot water setpoint outside permissible range Configuration error	Check hot water setpoint Check configuration Adjust setpoint if necessary
127	Anti-legionella temperature error	Anti-legionella temperature not reached Problems with hot water preparation	Check hot water preparation Check temperature Contact qualified service if necessary
134	Recurring heat pump error	Heat pump has repeatedly reported errors Systematic problem	Check error history Perform systematic diagnosis Contact qualified service
146	Configuration error	System configuration faulty Incompatible settings	Check system configuration Check settings Reset configuration if necessary
370	Heat pump error (various)	Various heat pump errors possible General heat pump error	Check error history Identify specific error code Contact qualified service
F6	Communication error	Communication error between components Defective control board Problems with data transmission Wiring damaged	Check control board for errors Check communication connections Check wiring Restart system Contact qualified service if problem persists
F7	System error	General system error Defective control board Problems with system configuration Hardware error	Restart system Check control board for errors Check system configuration Contact qualified service if problem persists
F8	Electronics error	Control board defective Hardware error on board Electronic components damaged	Check control board for visible damage Restart system Have control board checked by qualified service Have board replaced if defective Contact qualified service for diagnosis

Need More Help?

If you are experiencing problems with your Ideal Heating heat pump that are not covered by these error codes, or if the provided solutions do not resolve your issue, we recommend:

Consult your Ideal Heating heat pump user manual for model-specific information
Visit the official Ideal Heating support page: idealheating.com/support
Contact Ideal Heating customer service in the United Kingdom for technical support
Seek help from a qualified heat pump repair technician
Check warranty coverage if your heat pump is still under warranty

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