BoilerFaultCodes.com

Remeha Quinta Ace 45 Fault Codes

System Natural Gas 45 kW 2018-present

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Most common fault codes

0 0.
Your boiler has detected a flame signal when it shouldn't be there, which has caused it to shut down for safety purposes.
Gas Safe engineer required · £120-250
0 1.
Your boiler has lost power to its internal electrical control circuit, meaning it cannot communicate with its parts or operate at all.
Gas Safe engineer required · £120-350
0 2.
Your boiler is failing to light or cannot detect the flame, meaning it has shut down to prevent unburned gas from building up.
May be DIY safe · £120-350

All 42 fault codes

Code Severity Plain English
0 Low Your boiler is currently taking a break because it has finished heating your home and is waiting for the next request for warmth or hot water.
0 0. High Your boiler has detected a flame signal when it shouldn't be there, which has caused it to shut down for safety purposes.
0 1. High Your boiler has lost power to its internal electrical control circuit, meaning it cannot communicate with its parts or operate at all.
0 2. High Your boiler is failing to light or cannot detect the flame, meaning it has shut down to prevent unburned gas from building up.
0 4 High Your boiler has experienced a power disruption while it was already trying to report a serious internal error, causing it to lock itself for safety.
0 8. High Your boiler has detected a blockage or a mechanical failure in the system that moves air in and out of the unit, causing it to shut down for safety.
1 High Your boiler is in a normal startup phase where it clears any leftover gas from the combustion chamber before lighting, but it has become stuck at this stage.
1 2. High Your boiler's internal electronic protection has triggered and the unit has completely lost power due to a failed internal fuse.
1 8. High Your boiler has shut down because the water inside has become too hot, usually due to a lack of circulation or a blockage.
1 9. High Your boiler has shut down because the water returning to the unit is too hot, meaning heat isn't being transferred properly to your radiators or taps.
2 High Your boiler has failed to ignite, meaning it cannot light the gas to start heating your water.
2 4. High Your boiler has detected that hot water is moving in the wrong direction or the temperature sensors have been confused, causing the system to shut down for safety.
2 5. High Your boiler is overheating because water isn't moving through the system quickly enough to carry the heat away.
2 8. High Your boiler has stopped working because the fan that removes waste gases cannot start or is not being powered correctly.
2 9. High Your boiler's fan is running continuously because the internal control computer and the fan are not communicating correctly.
3 Low Your boiler is currently operating normally and providing heat for your radiators, as this code is a status indicator rather than a breakdown.
3 0. High Your boiler has shut down because the water is not circulating properly, causing it to overheat too quickly.
3 1. High Your boiler has stopped working because it has detected a fault with the internal sensor that monitors the temperature of the water leaving the unit.
3 2. High Your boiler has detected a technical fault with the sensor that monitors water returning to the unit, causing the system to shut down as a safety precaution.
3 6. High Your boiler has detected that a key internal thermometer is broken or disconnected, meaning it cannot safely monitor the temperature of the water leaving the unit.
3 7. High Your boiler has stopped working because it cannot correctly measure the temperature of the water returning to the unit.
4 Low Your boiler is currently providing hot water but is staying in that mode longer than expected.
4 3. High Your boiler's computer memory has incorrect settings or corrupted data, causing it to stop running for safety.
5 Low Your boiler is temporarily pausing its operation to check internal conditions before it attempts to restart.
6 Low Your boiler is currently running its fan to clear out any remaining heat or gases after it has stopped firing, which is usually a normal part of its operation.
6 1. High Your boiler has detected that a safety sensor meant to monitor air flow is stuck or blocked, preventing the system from starting up safely.
7 Low Your boiler's internal pump is continuing to run longer than expected after the heating has been turned off.
8 Medium Your boiler's hot water pump is running for too long, which usually means the system is struggling to cool down or a sensor is misreading the temperature.
9 High Your boiler has switched itself off because the water inside has become too hot too quickly.
37 High Your boiler has detected an internal communication or sensor data error and has shut down to protect itself.
E0 High Your boiler's main internal computer has developed a fault and cannot process commands properly.
E1 High Your boiler has tried to light several times but cannot start a flame, meaning your heating and hot water will not work.
E2 High Your boiler thinks a flame is present even when it should be turned off, which prevents it from starting up safely.
E3 High Your boiler has shut down because it has detected that there is either not enough water in the system or it has become too hot.
E4 High Your boiler's electronic brain has encountered an internal software or hardware glitch and has stopped working for safety.
E5 High Your boiler has stopped working because the fan system that safely clears away waste gases is not operating correctly.
E6 High Your boiler's internal thermometer has stopped working correctly, meaning the system can no longer tell how hot the water is and has shut down for safety.
E7 High Your boiler has stopped working because it cannot properly measure the temperature of the water coming back into the unit due to a faulty internal sensor.
E8 High Your boiler has stopped working because its internal computer has detected a problem with the electronic circuit that manages the flame.
E9 High Your boiler has identified an internal electronic fault or has reached an unsafe temperature, causing it to shut down for safety.
H Low Your boiler is temporarily running at its maximum power setting, which is usually a test mode activated during a service or inspection.
L Low Your boiler is temporarily running at a lower power than normal to protect its internal parts from overheating or poor water circulation.

Protect yourself from future repair bills

Monthly cover means no unexpected bills when your boiler breaks down.

Top rated
OpenFix
Boiler & heating care plans
Get a quote →
Hometree
from £12.95/month
Get a quote →
HomeServe
from £8.00/month
Get a quote →

Affiliate links — we may earn a commission at no extra cost to you.