Grant Aerona E06 fault code
Grant Aerona heat pumps
What it means
Return air temperature sensor (TH) failure
The return air temperature sensor (th) sensor reads open or short circuit.
Safety: Safe isolation before disconnecting sensors or working on the PCB.
UK models this code applies to
From the Grant service literature we hold (Grant Aerona 290 installation manual DOC0204 Rev 1.8, Table 11-1) — not a scraped list.
Aerona HPR2904 (4 kW)Aerona HPR29065 (6.5 kW)Aerona HPR2909 (9 kW)Aerona HPR29012 (12 kW)Aerona HPR290155 (15.5 kW)Aerona³ HPID6Aerona³ HPID10Aerona³ HPID16
Now the harder half: proving what caused it
E06 names a symptom, not a root cause. In the app, the same code opens a guided investigation: what to measure first, the expected values for your exact model, and an honest verdict — including “nothing in this machine is broken” when that's what the readings say.
Chase E06 on your machine →Free, no sign-up. Pick the model and follow Grant Aerona's own chart for it, one question at a time.
Or watch one get chased — free demo →