Recent content by psheld

Even though the PCB was upgraded five years ago, I too saw miketheboilerman's writeup on the Suprima and assumed another new (well, refurbished) PCB would do the trick. Alas no. The resistance on my thermistor checks out fine, but wondering whether it's the wiring that links it to the PCB. Hmm.

Watch the Potterton Suprima cycle... possibly the finest three minutes in YouTube history :lol: http://youtu.be/ynz_aCgyKLA

Same problem here! > Potterton Suprima 70 > Seven normal radiators and three 'towel radiators' (ie, off the HW rather than CH) > Standard pipes > Second replacement PCB (newest type) fitted this morning The normal cycle when both HW and CH demanded is: > 2 minutes green flashing – no...