Propex Heater woes

[maxstu]

My heater is not cycling. Just warms up with green display light illuminated. Stops when at correct temperature but does not fire up again. Green light stays on.
Richard at Propex suggests the switch containing thermostat is faulty and to try a donor before sending mine to Propex for repair or reset.
If another member has a spare one I could try then please contact me. Am happy to pay a returnable deposit plus all postage costs through Paypal or alternative secure method. Or trader by sell or return.

Any advice gratefully accepted.
Regards
Stuart 07961 423324