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Alpha boiler - wireless programmer failing

Alpha model HE CB25 - DHW is fine, but after setting up wireless programmer to be ON and room its thermostat to 22 deg min., 25 deg max, the heating fires up but then shuts down after about 2/3 minutes, even though room temp on programmer indicates only 18 deg.
I have tried another programmer i.e. transmitter, from an identical boiler with same result.
I have not changed the receiver.

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  • keithfarmer9 Jan 12, 2009

    Taking your advice, I diagnosed the fault to the receiver.

    Thanks for your help.

  • Anonymous Mar 23, 2014

    I have a used 1F90 C-S 2 thermostat and was wandering if the heating cycle can modify to achieve a 2 to 3 deg.C difference between start and stop of the stove. This is for a Piazzetta 960 pellet stove.
    Jacques Goudreau



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It sounds like the problem may be in the boiler and not the controller itself. Do you kno which is are the two wores that are the r-w for the thermostat take and purt them together and see if the boiler stays on or shuts off like it does with the thermostat. If it does then replace the reciever. If it doesn't then you have another problem. Good Luck

Posted on Jan 07, 2009


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