What the manual says
Manufacturer manualRC35-HK2 remote control. No remote control assigned, although frost protection type “FROST” has been set.
DIY fix possible
Locate the RC35 remote control unit or the boiler's main internal menu.Navigate to the heating settings and verify if a remote controller is assigned.If no remote is physically installed, change the frost protection setting to the internal sensor option or reset the thermostat configuration to match your actual setup.
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Related fault codes
All 51 fault codes on the GB162
Seeing a different code? Every code this model can display, in one place.