my honeywell thermostat for our waterfurnace is flashing 7 times. the air coming out of our vents isn't as cold as I am used to, the temp is rising. any suggestions? there is a light on the unit that says "drain"
Brand: water furnace
Type of HVAC: Thermostat Control
Turn off the unit and turn it back on. Turn off the breaker and turn it back on.
Hello there! I'm Norman but you can call me Norm. Let's see what I can do to get you some answers today. I'm ready to get started whenever you are.
Is this a red light flashing?
7 flashes of the red light indicate a condensate overflow. May want to check the main drain line and make sure it isn't clogged.
How do you check the main drain line. Ours is a hard pvc pipe. Can we just pour water into it and see if it runs out?
Yes you can try doing that but if the vent you pour the water into is on the wrong side of the trap you may not see the stoppage.
I would pull the door off that contains the drain line and snake backwards through the trap or you can use compressed air to blow out.
One more way is to plug any drain vents and take a shop vac outside and suck the line out.
Ok, we will try that. Right now, my husband got it working by turning off a second breaker. When he turned it back on the blinking light went away. I assume the alert will come back on when it detects that we didn't get the drain line cleaned out. Can we write back if we have trouble? How do we talk to you again?
Yes you sure can. The overflow detection is a lockout that will shut the system down. When you have the system off for a while it is likely that the condensate drains down slowly. When you reset the breaker the system will power back up as normal but you will probably have the problem again.
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Thank you for your help! Will we have to pay again if I ask another question about the same problem?
No, not at all
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thanks. Hope you are staying cool!
NC/VA Master HVAC & Gas, Air Balance, LG Master Commissioner
Thank you so much. Just return and reply if you have further questions.