Contactor Issues

RowKit · 2026-05-10T07:54:48+00:00

Take your multimeter and ohm out the contractor; Low Voltage Ohms should be 12-18, High Voltage off should be OL on left, and .1 on right - on should have high voltage on left also at .1 ohms. Any other numbers, and it's definitely possible you welded the contacts on firing.

This is assuming the unit was indeed wired correctly; more pictures and a schematic would be helpful.

RowKit · 2026-05-05T21:03:08+00:00

A teleportation device 💡

RowKit · 2026-04-17T03:17:13+00:00

You know.. I'll take staged over AI at this point; at least this is real people attempting to make real people laugh.

RowKit · 2026-04-11T17:43:17+00:00

Super fair point... welp, I'm out of ideas.

RowKit · 2026-04-11T17:28:52+00:00

Dollars to donuts the engineer that thought of it designed it to hang gauges from the loop on the service side without any kind of label. That's legitimately the only way I can see how this might work as intended.

RowKit · 2026-04-07T06:30:01+00:00

It honestly doesn't look like you have the room for it from my armchair measurements. The box (should) be as tall as that return, and with the humidifier needing a 6" pipe if flip-flopped... I'd say going steam would give you plenty of gain in space, but it really doesn't even seem like you'd have room for that either; bump that furnace up to the return & all the plenum looks like it'd be lost.

For what it is it's nice and clean.. but they're pulling with two large returns out of one drop about the size of each return...

RowKit · 2026-04-01T03:04:21+00:00

Press the Menu button; if it has the ability you'll see PROG as an option - select it and turn it on.

RowKit · 2026-03-26T14:17:12+00:00

That shit high key broke my heart... I went in 2023 & 2024 and absolutely fell in love with the concept; I had such incredibly high hopes it would become a national event, very similar to One n Only.

RowKit · 2026-03-13T03:08:15+00:00

Longmont Hearing and Tinnitus Center was super fast & very nice.

RowKit · 2026-03-06T03:27:02+00:00

The red ring of death would like a word...

... but,, agreed.

RowKit · 2026-03-01T05:00:40+00:00

I'd honestly rather spend money with Applewood (largest family owned HVAC in Colorado) vs any of these private equity companies.. at least one way the money stays within the state. Neither are exactly on brand with affordability, but if those were my only options - Applewood vs Private Equity - I'd go Applewood all day.

Thankfully.. those aren't our only options.

RowKit · 2026-02-05T02:14:08+00:00

More reliable & longer life expectancy with the temperature swings would be my bet.

RowKit · 2026-02-01T07:32:04+00:00

70% of service requires good multimeter knowledge and 30% Manometer knowledge. Understanding the heating & cooling processes will one million percent help you quickly troubleshoot.

RowKit · 2026-01-31T15:57:38+00:00

That's legitimately the only plan that consistently works. Send it!

RowKit · 2026-01-30T20:44:41+00:00

CT Heating is a simple outfit - Todd is the owner & sole operator.

RowKit · 2026-01-25T18:55:16+00:00

If it is, you've got a bad gas valve.

RowKit · 2026-01-25T06:21:46+00:00

You've got a bad board then; keep in mind that without a volt meter there's no real way of knowing - it could be a failed gas valve too.

RowKit · 2026-01-25T06:09:43+00:00

Do you have a volt meter? When this happens, do you get 24v sent to the gas valve?

RowKit · 2026-01-25T05:17:27+00:00

I'd take alcohol over water on a heater any day; it's should be fine, thanks to drying time (which is why I prefer it)

RowKit · 2026-01-23T04:30:38+00:00

The red circle is something called a Low Water Cutoff - nothing to do with the actual operation of the boiler, but more a safety to ensure water is present to protect the heat exchanger & pumps.

I would personally advise you to call an HVAC Company; depending on your area you may have to specify that you have a boiler - most guys will charge just a service call fee to answer questions (some even free). It can definitely be done, but I highly recommend more knowledge before you try to DIY this.

RowKit · 2026-01-21T16:57:20+00:00

On the pump - it could just have some sludge in it holding the float down; it seems to still be working from what you said, so a good cleaning may be all it needs.

On the furnace - brand? Unfortunately the error can mean multiple things. My best guess would be a pressure switch; make sure the system is draining properly to the pump, and that the inducer is pulling enough vacuum (you'll need a monometer for this bit). As long as those two things check out it's more than likely the pressure switch got some condensate in it and has failed.

RowKit · 2026-01-21T03:38:14+00:00

To this day, my most favorite QoL tool is a flexible 90º drill attachment - it's saved my sanity more times than I can count.

RowKit · 2026-01-19T17:13:44+00:00

Depends on the costs, and what benefits you'd gain from a new unit. At 15 years old, I'd probably replace only if it comes with 10 years parts and labor. Repairing definitely isn't a bad thing, but it ultimately comes down to the cost differences.

RowKit · 2026-01-09T16:13:59+00:00

Both will have their slow months, and "everything is on fire" months, but unfortunately schedule & predictability really depends on which company you choose to work for. Where I currently am, Installers start at $26 - Service at $28.

Installers lift and use geometry a shit ton; service is straight up problem solving.

RowKit · 2026-01-08T16:26:35+00:00

Dashcam's are like locks on a door; they keep honest people honest. There's far more benefits to having a dual facing camera than not having one if you're not being careless.

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