Heating & Cooling - Recent Questions, Troubleshooting & Support

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Modine Hot Dawg main fan not coming on?

Sound diagnostics Henry. If there are numbers on the relay you could source one and solder it to the board.
1/26/2022 9:19:19 PM • Heating &... • Answered 11 hours ago
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We have a Crown gas boiler. The temperature in the control box was changed from 120F to 175F. The radiator gets too hot, makes the floor vibrate, and makes banging noises. Is this normal?

No not normal. My guess is that the water is close to boiling at the boiler and is creating steam. Split the difference and set it to 150'F.
1/26/2022 6:57:44 PM • Crown Heating &... • Answered 13 hours ago
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Presto HeatDish Problem

I rewired my heat dish. I UNPLUGGED THE HEAT DISH. I loosened the three screws on the back and removed them. Then I unclipped the dish at the bottom. The dish should be loose and the bottom section of the dish should be detached from the plastic casing. Look inside the casing at the bottom. There is a red cable attached to the buzzer (it’s the silver metallic piece). Detach the red cable from the buzzer. Now look directly behind the buzzer is a black wire that connects to the circuit next the buzzer. Attach the red cable to the female receptor foot the black cable. Plug it in and it should work fine. This will permantly disable the buzzer, SO YOUR HEATDISSH NOW LOINGER HAS A WARNING SYSYTEM. IF YOU TURN YOUR HEATER OVER THE BUZZER DOES NOT GO OFF, THE BUZZER ALSO INDICATES OVERHEATING OF THE UNIT. SO BE CAREFULL. MAKE SURE THE UNIT IS UNPLUGGED WHEN WORKING ON IT. GOOD LUCK AND BE SAFE
1/25/2022 11:09:38 PM • Presto HeatDish... • Answered Yesterday
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Coleman evcon furnace dgat070bdd does not heat to thermostat temperature

Roof jack may be rusted out.
1/25/2022 9:12:11 PM • Coleman Heating... • Answered Yesterday
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Pilot light keeps jumping and sounds like a firework going off in the distance when the fire is lit on my Calor gas heater

I would have it serviced by a competent gas engineer before it does serious damage by exploding.
1/25/2022 8:36:22 PM • Heating &... • Answered Yesterday
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Do electric furnaces lose efficiency over time?

Not really, they don't lose efficiency. Electric heating is notoriously expensive. To reduce your bill make sure your home is well insulated especially the roof space and make sure there are no drafts from doors and windows and floor edges.
1/25/2022 7:11:31 PM • Coleman Heating... • Answered Yesterday
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I have a Dyno glo 20,000 btu Propane/natural gas heater and I cleaned the dust out and cleaned the pilot, now I can barely get it to run, The pilot is small and weak blue flame

I dont see any of those units that are dual fuel. You cannot use NG and propane on the same unit without a conversion. You did not post the model number so it is hard to say. However it could be a bad regulator, wrong gas pressure etc. Working on heating units that use gas from LPG or NG is dangerous if you dont know what you are doing.
1/25/2022 2:16:33 PM • Blue Flame... • Answered Yesterday
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Comfort Aire mini split E1 code 2 weeks after installation

NOTIFY COMFORT AIRE WE ARE NO PART OF THAT COMPANY
1/25/2022 12:55:29 PM • Heating &... • Answered Yesterday
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Fujitsu astra07jec. 3 flashes on timer I have changed batteries in remote. Turned off and on at outdoor unit and still not working Indoor unit still blows air but not cool Please help

'Serial signal error' that means the outdoor unit is not talking to the indoor unit. Usually caused by bugs, geckos, cockroaches, etc. getting on the inverter board and frying it. You could try turning off the isolator (switch next to the outdoor unit) or the circuit breaker in the switchboard controlling that particular circuit for 10 minutes then back on. Sometimes that clears the error if you're lucky... but not normally. You will probably have to get a replacement controller. Get a tech to diagnose. The boards are pretty expensive but normally can be repaired by the Module Repair Service in Melbourne far cheaper than a new board.
1/25/2022 10:26:48 AM • Fujitsu Heating... • Answered Yesterday
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Need help diagnosing Coleman DGAA077BDTD 'firing' issue.

It is a gas furnace and they need regular servicing, ideally yearly. Servicing can only be done by a qualified gas contractor. Leave it to the experts even though your diagnosis is probably correct. https://www.winstelcontrols.com/itemdetail/COLDGAA077BDTD ...
1/24/2022 8:21:08 PM • Coleman Heating... • Answered 2 days ago
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My monitor MPI 41 has a tall yellow flame instead of a blue flame, how can I fix it?

Not enough air and too much fuel. http://home.metrocast.net/~jurtaman/Monitor%20Service%20Manual.pdfService Manualhttp://home.metrocast.net › Monitor Service Manual PDFMONITOR422 . MONITOR 22. MONITOR 21,. MONITOR 441. MONITOR 41. MONITOR 40 ... Monitor is an easy-t~operate vented kerosene heater. ... Yellowish lazy. flame.70 pages
1/24/2022 6:23:33 PM • Heating &... • Answered 2 days ago
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I just change the batteries on my Bestech thermostat now it reads -d??

Replacing the Batteries 1.Open front cover and locate the battery compartment door. 2.Gently remove the two "AA" alkaline batteries located in the battery compartment. 3.Install two new "AA" alkaline batteries into battery compartment. Make sure to match the positive (+) ends of the batteries with the positive (+) terminals located in the battery compartment. 4.Close battery compartment. The low battery indicator should not appear n the display
1/24/2022 2:04:35 AM • Heating &... • Answered 3 days ago
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Gree Mini-Split shutting down randomly and must be restarted manually.

This link has a suggestion that it may be a thermostat issue. Try running it without to test the theory. Another suggestion is too much or too little refrigerant. https://www.google.com/search?q=gree+mini+split+shuts+off ..
1/23/2022 5:42:16 PM • Heating &... • Answered 3 days ago
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My comfort zone white portable heater turned off now nothing works not even the light

check voltage past switch if ok bad control board
1/23/2022 5:53:47 AM • Comfort Zone... • Answered on Jan 23, 2022
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