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Plumberpro
Plumberpro, Mechanical Engineer
Category: HVAC
Satisfied Customers: 634
Experience:  Over 20 years experience in plumbing heating and gas
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Trying to re programme my CM927, but when it goes to set target

Customer Question

trying to re programme my CM927, but when it goes to set target temps it displays a large first digit followed by a small 0 or 5 and will only go to large 9 small 5 before returning to 0.
Any suggestions?
Submitted: 2 years ago.
Category: HVAC
Expert:  Plumberpro replied 2 years ago.
Hi , try taking the batteries out for two minutes, to reset the unit
Customer: replied 2 years ago.

already tried that, didn't work, any further thoughts?

Expert:  Plumberpro replied 2 years ago.

Hi , I can only think that the programmer is somehow in installer mode to set installer parameters .its quite a complicated process to get into it though , so the only thing I can think is the programmer is faulty.

.exiting the installer mode is simply moving the slider to manual or prog , from off

Customer: replied 2 years ago.

OK, so it looks like a new programmer.

Will it readily "talk to the existing box".

Expert:  Plumberpro replied 2 years ago.
A new programmer would have to be partnered with the received. Fairly easy to do .