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Complete Guide to Ideal Logic Air Heat Pump Fault Codes

Published on

30 December 2024

The words Fault Codes, with the Ideal Logic Air heat pump, cylinder, halo controls all in the picure

Contributors

Ian Mclaren

Co-founder

Contents

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Introduction

‍If you own an Ideal Logic Air Heat Pump, then you might encounter fault codes displayed on the unit from time to time. Understanding these fault codes can save you time and money by helping you troubleshoot minor issues before calling a professional. In this guide, we cover all knownIdeal Logic Air Heat Pump fault codes, their meanings, and potential fixes. We will also look at some of the frequently asked questions around these fault codes, that aren't necessarily specific to one code or another.

It can also be beneficial to visit the Ideal Heating website for specific help from the manufacturer.

WhatAre The Fault Codes on an Ideal Logic Air Heat Pump?

Fault codes are diagnostic messages displayed on your heat pump’s control panel. Each code points to a specific issue, helping home owners and technicians identify problems quickly.

Comprehensive List of Fault Codes for Ideal Logic Air Heat Pumps

Below is a complete list of fault codes, what they mean, and possible troubleshooting steps.

1. General System Fault Codes

Fault Code	Description	Possible Fix
10	Outside Sensor Fault	Check and replace the outdoor sensor.
26	Header Thermistor Fault	Ensure proper wiring and replace if needed.
33	Flow Thermistor (Indoor) Fault	Verify the sensor connection or replace.
44	Return Thermistor Fault	Inspect the return thermistor for damage.
50	DHW Thermistor Fault	Check the DHW thermistor and replace.
60	Room Stat 1 Fault	Inspect or replace the first room stat.
65	Room Stat 2 Fault	Inspect or replace the second room stat.
81	LPB Short-Circuit/Comm Fault	Check wiring and LPB bus connection.
82	LPB Address Collision Fault	Ensure unique LPB addresses.
83	BSB Short Circuit Fault	Check the BSB wiring.
84	BSB Address Collision	Resolve address conflicts.
100	Two Clock Time Masters Detected	Ensure only one master clock is configured.
516	No Outdoor Connection Fault	Reconnect or replace the outdoor sensor.
102	Clock Without Backup Fault	Check the clock settings and backup power.
126	7093 DHW Setpoint Fault	Adjust DHW settings or reset.
127	Anti-Legionella Temp Fault	Inspect and adjust temperature settings.
134	Re-occurring Heat Pump Fault	Schedule professional maintenance.
146	Configuration Error	Verify system configuration settings.
171	Alarm Contact 1 Active Fault	Inspect the alarm settings.
366	Room Temp Sensor Fault	Check room temperature sensor wiring.
369	External Fault Detected	Inspect external components.
385	Low Mains Voltage Fault	Ensure stable power supply.
489	No Cascade Master Fault	Configure the cascade master.
490-499	No Outdoor Connection Fault	Verify outdoor sensor wiring.
506	Boiler No Temp Rise Fault	Inspect and reset boiler temperature.
516	No Outdoor Connection Fault	Reconnect or replace the outdoor sensor.

An image of an Ideal Logic Air heat pump

2. Heat Pump-Specific Fault Codes (Fault Code 370)

Fault Sub-Code	Description	Possible Fix
F0-F1	No Outdoor Connection	Verify outdoor unit wiring.
F2	Outdoor HX Thermistor Fault	Check and replace thermistor.
F3	Heat Pump Inverter Fault	Inspect the inverter. Call technician.
F4	Outdoor Electrical Filtering Fault	Ensure clean power supply.
F5	Outdoor Discharge Thermistor	Replace faulty thermistor.
F6	Compressor Thermistor Fault	Inspect and replace thermistor.
F7	Outdoor Intermediate HX Thermistor	Check thermistor and wiring.
F8	Outdoor Outlet HX Thermistor	Replace defective thermistor.
F9	Heat Pump Defrost Thermistor	Inspect defrost thermistor.
F10	Outdoor Heatsink Thermistor Fault	Replace damaged heatsink thermistor.
F11	Outdoor PFC Thermistor Fault	Inspect PFC wiring and replace.
F12	Outdoor Expansion Valve Thermistor	Check valve operation.
F13	Outdoor Electrical Error	Reset system, inspect wiring.
F14	Outdoor Pressure Sensor Fault	Inspect pressure sensor. Replace if needed.
F15	Heat Pump Air Flow Fault	Clear debris, check fan operation.
F16	Heat Pump Compressor Fault	Check compressor wiring.
F17	Heat Pump Fan Fault	Inspect and replace fan.
F18-F19	Compressor Temperature Issues	Allow to cool, inspect sensor.
F20	Outdoor Low Pressure	Check refrigerant levels.
F21	Outdoor Power Supply Fault	Ensure stable power supply.
F22-F27	Various System Errors	Inspect system and reset or service.

Frequently Asked Questions (FAQs)

Q: How do I reset my Ideal Logic Air Heat Pump? A: Switch off the heat pump at the control panel, wait for 5 minutes, and turn it back on. If the fault persists, call a technician.

Q: What does Fault Code 10 mean on an Ideal Logic Air HeatPump? A: Fault Code 10 indicates an ‘Outside Sensor Fault.’ Check and replace the outdoor sensor if needed.

Q: Why is my heat pump displaying Fault Code 44? A: FaultCode 44 indicates a ‘Return Thermistor Fault.’ Inspect the return thermistor for wiring issues or damage.

Q: Can I fix a Heat Pump Compressor Fault (F16) myself? A: Compressor faults should be handled by a professional HVAC technician due to system complexity.

Q: How do I resolve a Heat Pump Inverter Fault (F3)? A: Inspect the inverter and try resetting the system. If you find that the fault persists, contact a certified service technician.

Q: What should I do if my heat pump has a power supply fault(F21)? A: Ensure the unit has a stable power supply. Inspect breakers and wiring, or call a professional.

Conclusion

The fault codes displayed on your Ideal Logic AirHeat Pump can help you can diagnose problems faster and decide whether you need to seek professional help, or can resolve the issue yourself. For more detailed troubleshooting, consult the official user manual or contact use athello@dwellow.co.uk

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