Suspect heat strips are active in addition to heat pump
I am hoping somebody can help diagnose a potential problem with my heat pump/electric furnace. My intuition tells me it could be an installation/wiring issue.
I live in a pretty new semi-detach (less than 7 months old) with a Ruud Achiever 2.5 ton external heat pump, paired to a RHLL3617 electric furnace (with 14.4 kW heat strip). Both are mated to a Robert Shaw RS5220 2-stage heat/cool thermostat.
Settings on thermostat:
1st stage delta T: 2.0F
2nd stage delta T: 2.5F
2nd stage delay: 35 minutes
I live in and around the Montreal, QC region and for the past several weeks I have been monitoring my hydro meter quite closely. I very much suspect that the furnace elements are somehow turning on when my heat pump turns on even though I can clearly see that 2nd stage heating hasn't come on (i.e. room temperature is 66 and setpoint is at 68F).
For a 20 minute recorded period, I noticed my meter spike approximately 7kWh. In this same period, all other major appliance in my home are off.
Any thoughts? Thanks!