BoilerFaultCodesYour boiler is reporting an issue with the solar panel temperature sensor, which usually means the system is detecting an unusual reading from your solar thermal panels.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Collector temperature: Is only displayed, if a solar module is connected.
What causes this fault?
This fault occurs when the boiler's control system loses communication with the sensor that monitors the temperature of your solar panels. The most common reason is a broken or corroded wire between the roof and the boiler, or a sensor that has failed due to extreme weather exposure. Because the boiler cannot tell how hot the panels are, it stops integrating solar heat into your hot water system for safety.
This fault is more common in summer, as high thermal stress from peak sunshine can cause aging sensors or damaged wiring to fail under extreme heat.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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