Why Does My Hcalory TB2S Fan Run but Blow Cold Air?
Exact model: Hcalory TB2S
Safety: Stop and cool the heater. Keep combustion exhaust outdoors and discontinue use for persistent smoke or fuel leaks.
A.
Start with the accessible checks
What this suggests: A spinning cabin fan does not show that combustion has ignited.
What to do
- Check the exact voltage version and power source capacity under the startup load (the cited TB2S instructions recommend more than 15 A capacity for 12 V systems).
- Inspect external fusing, battery cable size/loose terminals and fuel pump priming with power removed as applicable.
- Clear kinked fuel lines and restricted combustion intake/exhaust.
Still not fixed? Continue to the next check.
↑ Back to the repair pathsB.
If the problem remains after the first checks
What this suggests: During startup, the 12 V heater may draw about 12 A, so a bright controller screen can coexist with inadequate glow-plug supply.
What to do
- If supply and fuel are correct but ignition repeatedly fails, qualified service must verify the glow plug, burner screen and combustion chamber matched to the heater version before replacement.
Confirm the repair
After ignition, measured outlet air warms as the combustion chamber stabilizes and no E10/E08 appears. Do not keep cycling a heater that accumulates unburned fuel.