Heating's red LED lights up or flashes: Malfunction

Take a small brush and gently clean out the heater's rotary switch.

FrostControl safety/drain valve indicates a risk of sub-zero temperatures

Possible cause: The FrostControl valve has detected a risk of sub-zero (freezing) temperatures.. The valve automatically drains the boiler's contents via the drain outlet - no action needed unless you want to prevent the automatic drain, e.g. by keeping the installation area heated.

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Hobby • Heating

Covers: Motorhomes Premium Van, Premium Drive

Hobby Heating

(Motorhomes Premium Van / Premium Drive, 2013 Model Year)

View official manual on manufacturer's site ↗

Master Troubleshooting & Diagnostics Matrix

Error Code / Indicator	Symptom / Meaning	Possible Cause	Step-by-Step DIY Fix	Suggested Actions
`N/A`	Heating's red LED lights up or flashes: Malfunction	—	Take a small brush and gently clean out the heater's rotary switch.	DIY Safe
`N/A`	FrostControl safety/drain valve indicates a risk of sub-zero temperatures	The FrostControl valve has detected a risk of sub-zero (freezing) temperatures.	The valve automatically drains the boiler's contents via the drain outlet - no action needed unless you want to prevent the automatic drain, e.g. by keeping the installation area heated.	DIY Safe