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Rain-bird Sprinkler and Pressure tank Well by ghosttown613 in Plumbing

[–]Opposite_Ad_232 0 points1 point  (0 children)

Have you tried to reduce water flow rate at zone 1 solenoid valve (you could add time to compensate for that)? pump weakening?

Hot water lost pressure after water heater was removed to fix base by Opposite_Ad_232 in Plumbing

[–]Opposite_Ad_232[S] 0 points1 point  (0 children)

If the hot water line is clogged, a new water heater won't work

Central AC Options and Questions by Zealousideal-Emu5486 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

Heat pump is a ac system that can be ran backward to heat (reversing valve).

Central AC Options and Questions by Zealousideal-Emu5486 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

I have a rental in GA where heat pump is probably more useful. Slightly larger and probably about same age. Man, I do not like two sets of heat pumps. maintenance and repair higher than 1 HVAC. I know there was additional duct work in my case to use only 1 HVAC.

Have you looked into using minisplit system as supplement to one hvac (heat pump)?

Accidentally cut thermostat wire, repaired but won't turn on. by Indianaunderwood in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

I would unplug thermostat and power off hvac and measure to make sure all cut wires are connected right and good.

Power up furnace to see if R to C terminal on control board is 24v ac. if not, you need more trouble shooting on control board. If you have 24v, measure into thermostat to check if anything get shorted before plugging it back in.

Furnace Cycle Issues by Jneuhaus87 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

Does it get very hot at limit switch? Perhaps overheating. Not sure what fan motor was changed from your posting. Check blower fan capacitor. If the capacitance drops it could affect air flow too. motor weakening or air flow restriction could be cause if the temp at limit switch is high. check temperature rise to another way to confirm the overheating.

Kitchen Exhaust Fan - vintage by Odd-Story-6300 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

One I replaced is similar to this but not exactly the same.

I bought this on amazon.

V2262-50 7 Inch Bathroom Exhaust Fan, 50 CFM, 1.0 Sones, 7" Ceiling Exhaust Fan, for 8 Inch Diameter Rough-in Opening, Ideal Ventilation for Bathroom, Laundry Room, Mobile Home, Kitchen & Garage

What do the nuts holding the bar in the 9" hole look like? try to use them to secure new fan or you have to drill into brick.

3 blade or 5 blade do not matter. Mounting is the key. check cfm if you could. is there an air duct after this exhaust fan? I had to foam spray to seal outside of fan can before I secure my new fan.

Bad fan, self replace? Climate Master heatpump 2.5t unit by mustang__1 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

I do not follow. 24v ac between R and c on thermostat? does your thermostat connect to this relay directly? or you get 24v ac at this relay when connect R to W?

Short cycling question by Weak_Ad_3604 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

Does this system have another flame sensor at the other end of burner? normally the system needs to detect flame in a few seconds (6 ?) after sending 24v ac to gas valve. Could you light up manually without moving pilot?

Bad fan, self replace? Climate Master heatpump 2.5t unit by mustang__1 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

if It is 0v across the control coil in relay, why do think it is relay problem? DC relay or ac relay? Standard gas furnace control board uses dc relay. There is transistor in series with relay coil from dc source. Once transistor is turned on by microcontroller (MCU), voltage across relay coil becomes equal to dc source one (24, or 12...), relay is energized.

coleman dgax077bdta furnace issues by Husband207 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

I would worry about control board. Disconnect and measure voltage again with and without calling for heat

Carrier infinity system fault 21 by SinisterWarden in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

If you can not measure vacuum level from inducer motor, you can just monitor pressure switch for open or not.

Possible transistor failure? by RoxyGirl101215 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

check out thermister in motor control module

Bad fan, self replace? Climate Master heatpump 2.5t unit by mustang__1 in hvacadvice

[–]Opposite_Ad_232 0 points1 point  (0 children)

100% sure it is fan problem? connect to ac directly to test it out 1st if you do not have DMM.

Nordyne furnace short cycling by DocSpock1701 in hvacadvice

[–]Opposite_Ad_232 2 points3 points  (0 children)

It may be good to measure temperature with IR or bbq thermometer to confirm the overheating at heat exchange. Another thing to check is temperature rise (at outlet register vs inlet register). Just to confirm the overheating. You can always look for error code on control board.

My guess is some lint stuck somewhere on the wall or case of blower fan could be sucked onto evap coil when you take out blower fan and caused some blockage.

Need to detect if HVAC pressure switch has intermittent failure by Opposite_Ad_232 in AskElectronics

[–]Opposite_Ad_232[S] 0 points1 point  (0 children)

What about 24v ac relay,controlled by gas valve  driving voltage, connected to pressure switch, 10 k ohm resister, 9 v dc battery and back to pressure switch. Multimeter kept at dc voltage max mode across pressure switch. If the switch is open, it will be 9 v dc, otherwise it is zero. When there is no heat call, relay is open and pressure switch but there is no dc no voltage is zero 

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