BMPlus2000 heat call issue?
BMPlus2000 heat call issue?
Hello. Any help with the following issue would be greatly appreciated. I have a heat pump with electric backup and a BMPlus2000 controlling 2 zones. From time to time the thermostat shows 68dF althought the temperature setpoint was at least 3-5 degrees higher. When this happens, Z1, Z2 and Y LEDs on the board are on. Changing the thermostat setpoint or turning it off and on has no effect, the system does not start. It starts only after I press system and timer reset buttons on the board. However, it cycles 2minute on and a few minutes off several times until it switches to the normal run mode (in the normal heat run mode, Z1, Y, W1/B, and G LEDs are on). Sometimes, it continues to cycle that way for a long time. What can cause this? It is as if the heat call from the thermostat is ignored due to some glitch. Thanks.