Search: Posts Made By: HVAC Mech.
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07-14-09, 04:27 AM
Replies: 4
Views: 2,439
Posted By HVAC Mech.

The duct could be rusted out where it lays on the...

The duct could be rusted out where it lays on the ground. In any event, it sounds like the duct is trapped and water is blowing off the coil because it needs cleaning.
Tom
07-14-09, 04:23 AM
Replies: 7
Views: 969
Posted By HVAC Mech.

A small critter, maybe. More likely is the pitch...

A small critter, maybe. More likely is the pitch or trap style. Traps need to be pre-filled on some systems, depending where the pan is in relation to the blower.
Just feel at the drain line...
07-14-09, 03:59 AM
Replies: 8
Views: 1,035
Posted By HVAC Mech.

Any fiberglass with a vapor barrier would do, or...

Any fiberglass with a vapor barrier would do, or rigid or soft foam would serve as its own vapor barrier.
You could spray it with foam since its not in sight, too.
Tom Beer 4U2
06-02-09, 07:51 PM
Replies: 4
Views: 2,100
Posted By HVAC Mech.

It could be something other than the internal...

It could be something other than the internal compressor overload stopping operation. There are controls that when they heat up, can open. Such as contactors, transformers, capacitors, time delays,...
06-02-09, 07:42 PM
Replies: 1
Views: 695
Posted By HVAC Mech.

Different amounts of flourines, chlorines,...

Different amounts of flourines, chlorines, ethanes and methanes, plus others are mixed, blended or azeotropic. This is done to give certain characteristics: different evaporating and condensing temps...
05-10-09, 06:11 AM
Replies: 7
Views: 7,171
Posted By HVAC Mech.

The only other thing I can think of to do, is to...

The only other thing I can think of to do, is to replace the contactor with a DPST type. Then the CCH wouldn't be energised during the off cycle. If you never use the HP function, I wouldn't worry...
05-09-09, 04:00 AM
Replies: 7
Views: 7,171
Posted By HVAC Mech.

I see power supplied all the time to the run...

I see power supplied all the time to the run winding of the OFM thru the unswitched leg/ yellow wire to the OFM. The switched leg contact is shorted thru the CCH, when the CCH switch is made. This...
05-07-09, 06:24 PM
Replies: 6
Views: 8,877
Posted By HVAC Mech.

The suction filter-drier could be a little...

The suction filter-drier could be a little clogged from junk left from the change-out in '03. That can be removed and replaced with pipe, and the smaller F-D on the LL changed.
It'll take some time...
05-07-09, 06:10 PM
Replies: 3
Views: 1,159
Posted By HVAC Mech.

In a hermetic (the can) compressor, the motor is...

In a hermetic (the can) compressor, the motor is mounted on springs inside the outer shell. Some of them can clunk or rattle when stopping and starting.
Might be a loose fan motor support, too....
05-07-09, 06:06 PM
Replies: 7
Views: 7,171
Posted By HVAC Mech.

If the fan motor is 120v. then the neutral leg...

If the fan motor is 120v. then the neutral leg may be the one being switched by the contactor instead of L1. This would make the motor "live" to ground.
If 208v. 1 phase, then L1 & L2 are both used...
05-03-09, 05:55 AM
Replies: 10
Views: 3,921
Posted By HVAC Mech.

This thread would make sense if the word 'cover'...

This thread would make sense if the word 'cover' is replaced with 'access panel'. The Maytag guy would be happier, too.
Tom Beer 4U2
05-03-09, 05:51 AM
Replies: 6
Views: 1,184
Posted By HVAC Mech.

It sounds like the contractor has more than one...

It sounds like the contractor has more than one iron in the fire, and is getting to the jobs on a schedule. Which is understandable. After all, one doesn't want to put all one's eggs in one basket,...
05-03-09, 05:41 AM
Replies: 6
Views: 1,026
Posted By HVAC Mech.

Thanx for the tip, Former. I wouldn't have...

Thanx for the tip, Former. I wouldn't have thought of that, but will remember it in the future!
Tom Beer 4U2
05-03-09, 05:37 AM
Replies: 8
Views: 15,531
Posted By HVAC Mech.

Oops! My bad. I thought humiditrol referred to a...

Oops! My bad. I thought humiditrol referred to a humidistat type control. I googled and found this>
Humidity Control | Home humidity controls | Humiditrol Whole-Home Dehumidification System | Lennox...
05-02-09, 04:28 PM
Replies: 8
Views: 21,872
Posted By HVAC Mech.

Sounds like the sections were made in the shop...

Sounds like the sections were made in the shop with a lockformer machine. When fit together on the job site, a lip is hammered over. Some of the ones I've seen can be opened with a hammer used to...
05-02-09, 03:21 PM
Replies: 8
Views: 21,872
Posted By HVAC Mech.

Or, with tin snips, cut an rectangular access...

Or, with tin snips, cut an rectangular access hole into the side of the duct, reach in and repair, then cut a piece larger than the hole, screw it and seal it with aluminum tape. Not duct tape. Duct...
05-02-09, 03:15 PM
Replies: 8
Views: 21,872
Posted By HVAC Mech.

OK, that's a manual damper. The duct is held...

OK, that's a manual damper. The duct is held together by what they call 'slips'. They allow a male/female type of connection. Here's a look: SIDE VIEW...
05-02-09, 01:17 PM
Replies: 8
Views: 21,872
Posted By HVAC Mech.

The 'switch' you're referring to may be what we...

The 'switch' you're referring to may be what we call a damper, operated by a zone motor. Some zone motors have manual openers on them-a sliding lever or turning knob.
Is this what you are referring...
05-02-09, 01:12 PM
Replies: 8
Views: 10,476
Posted By HVAC Mech.

Sounds like a bad dual capacitor that supplies...

Sounds like a bad dual capacitor that supplies the compressor and the condensor-fan motors. While they're there, have the whole unit checked; coils cleaned, filter changed, temps checked... if it...
05-02-09, 01:03 PM
Replies: 16
Views: 3,675
Posted By HVAC Mech.

http://i59.photobucket.com/albums/g314/tomd7735/Fa...

http://i59.photobucket.com/albums/g314/tomd7735/Fancenter.jpg
Yours may be similar to this, but it may be built into a PC Board. Look for the low voltage terminal strip with the letters...
05-02-09, 12:47 PM
Replies: 6
Views: 1,026
Posted By HVAC Mech.

Call several local contractors and have them send...

Call several local contractors and have them send out salesmen/estimators to do a load calculation, then give you ball park figures for a system.
Sometimes it's best to have a matched condensing...
05-02-09, 12:35 PM
Replies: 8
Views: 15,531
Posted By HVAC Mech.

The "Humiditrol" will function in conjunction (in...

The "Humiditrol" will function in conjunction (in parallel) with the thermostat to keep the compressor and indoor blower running at a low speed, thereby acting as a dehumidifier.
In other words,...
05-02-09, 12:26 PM
Replies: 12
Views: 8,446
Posted By HVAC Mech.

Listening for a hisssss seems to be somewhat akin...

Listening for a hisssss seems to be somewhat akin to looking for a gas leak with a match!
Tom Beer 4U2
05-02-09, 12:16 PM
Replies: 4
Views: 2,999
Posted By HVAC Mech.

Sure, wattage could be different due to...

Sure, wattage could be different due to age/efficiency, state of wear...
You could add a 1/2 ton unit in the dining area which would cool faster. Then the existing unit would run less. You'd try to...
05-02-09, 12:03 PM
Replies: 6
Views: 8,877
Posted By HVAC Mech.

With a partially clogged filter-drier there would...

With a partially clogged filter-drier there would be a temp. drop across the drier. I think he got the readings wrong. In any event, the difference is not great enough to worry about.
29* from the...
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