one zone not heating up

eddie1

Hello anyone,

My 10 year old home using a Laars mini-thermo ll to heat my water & floors,

there is 5 zones in the house, seems all is working normal with the exception of

upstairs (2 bedroom zone) not warming up at all, even when it was working, it seems

rather patchy at certain areas, was good when new. swapped thermostat with

other zone makes no difference, problem seems worsen since last power

outage in November, & pilot light was also out, house was cold with freezing

temperature outside for 2 days (we were out of town), what may be wrong &

what can a simple man try before calling the service people, please help with

details.   Thank you                                                           Eddie