Question about Honeywell Programmable Thermostat Heater

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One zone not working; another is partly working

The heating system uses hot water, the boiler uses oil. I have 4 zones.

Problem 1. On one zone, which happens to be the 2nd flr, the baseboards are cold even when the thermostat is set at 70. In the boiler room, there are 4 zone valves; the pipe on one of the zone valves is not as hot as all the other 3.

Problem 2. In the first floor, there are two zones with seven baseboards. Three of the baseboards used to work but now remain cold.

I would appreciate if you could tell me what are casing the problems.

Thank you.
EdwinR

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I would check my water pressure on boiler sounds like lack of pressure or air in system they can be related. if you have bleeder on baseboard try to bleed.

Posted on Feb 24, 2009

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