JLWD1609 (Electrolux underneath?) no heat in dryer

I have a John Lewis branded washer dryer, JLWD1609, that I believe is an Electrolux.

Yesterday I found it had not dried a load and there was a very distinct burnt smell inside the machine, but not evident outside. I started a new drying cycle and the motor that normally runs to blow air across the heater and in to the drum did not seem to run (but I don’t know if it always would and whether I waited long enough). There does not seem to be any heat either.

I turned off, took the top off and measured the following (see picture for locations)

1. Resistance of two heating elements (H1 to H3/4 and H2 to H3/4) which both seemed to be just over 60ohms
2. Resistance of three temperature sensors(?). T1 and T2 are 0 ohms i.e. closed. T3 seemed to be open circuit.
3. The motor seemed to generate a small DC voltage when spun by hand so I decided this was not dead and perhaps it was not receiving any supply.

I turned the machine back on and measured

4. Voltage to motor. Difficult to do with multi-meter probes poking into connectors but got a reading above zero DC and then got ‘bitten’ so that seems to be okay – for some definitions of okay :- )

Finally connected motor again, started a new cycle. Motor ran this time although to my mind noisier and possibly faster than usual (my ears were ringing afterwards – failed bearings? or just because top was off?)

5. Voltage across heater elements (i.e. H1 to H3/4 and H2 to H3/4) seemed to lower than I would have expected, approx 20V AC

Let it run for a while and put my hand on the metal box containing the heater and didn’t feel any hint of heat.

Any thoughts?

Thanks in advance
Rob