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Changed password little while back and just noticed I have lost my pro status, glitch.? Or reason for change.?

Have a few sites with lots of FHP water source heat pumps they all have one biflow txv with a bi flow drier installed liquid line entering txv side in cooling mode. Work just fine. however we have to...

A tip if you have multiple of same units on a site check one that works out so you can help yourself fully understand the sequence of operation

Bummer just bought the Mc few months ago would a waited if I knew this was on its way.

I know this is an old thread but do you guys usually try to achieve 500 microns when evacuating each compressor out after the oil change?

briefly had time to take quick look at unit today before I got pulled off to emergency call and now the issue is the water in the sump intermittently turns slushy and partially freezes. Have you guys...

when you say the miser are you refering to the probe sensor that's in the sump with the 3 metal prongs? Also to aces the water inlet valve on these units is it on the right hand side of unit?

Yeah I've lost a few of them tips on my H10pm haha but yeah was able to get a h10 pro ordered from our carrier supplier for decent price of lil over 500 so I'll hopefully have it soon and see if...

so yah I figured there wasn't no issues with it gonna try another supplier tomorrow if not go with trutech only thing is being in canada our dollar sucks right now. And after seeing the amounts of...

So am in the market for picking up another leak detector to accompany my H10pm and I see they've changed it to a H10Pro. However today when called one our suppliers to see pricing he told me that...

so event log error codes are E20 water fault and a E31 Safe Mode also found looked like sump was overflowing with water I'm going to pull sensor and clean again anything else I should check?

Also...

Okay thanks guys I'll dig into a little further when I get back to site

There wasn't an actual error code just the little triangle! displaying Dirty Water. And yeah I removed the sump. So the water level probe is what would give it a dirty water alert? I'll re pull that...

when you say water sensor you mean the water level probe? or the thickness sensor? I soaked the water level probe in cleaner and wiped it as for the ice thickness sensor I didn't completely remove...

So had a call today on a newer manitowoc indigo ice machine found it making little to no ice due to some excessive scale buildup. And a dirty water error Pulled it all apart cleaned it all put it...

Hey guys, had a call today on an old Friedrich water source heat pump unit with a shot compressor. The original compressor is a Tecumseh AH5531E a 208/230 3ph, and I guess the last tech that used to...

thanks for all the input, did end up going back to site there and finding that the enthalpy pot was set to DIFF so changed it to D setpoint which cleared the 92 error code. The only thing tho is unit...

Ive had the meter combo for 8 years never any issues been my go to meters since purchase, so I'd recommend them.

Hey guys, had a call today on a Lennox Model:LGA090H4BH3Y Serial:5609M00447
So problem was unit wouldn't try operate economizer, it would go straight to compressor cooling operation and I'd get...

The site is an hour and a half out of town so never been one for us to be able to get to before they reset. However today finally I got them to take a picture of the zone controller when it locked...

hey guys looking for some help with a trane RTU m# YCD120C3MAAC serial# P23100912D

So problem that's happening is that the staff at this bank keep complaining that the unit just stops working no...

darn okay yah it's a good possibility considering I'm located up in canada haha thanks for looking tho

the model sticker was in pretty good shape and was definitely C1G-12R it's a 12 ft reach in coffin style freezer

Hey got an old 12 ft open freezer case Hussmann model# C1G -12R serial#1820822200H9288 just looking for the btu's if anyone has any info on it would be great thanks in advance.

Hey guys, have a site with a ton of these old Carrier through the wall a/c and heat units that are sprining leaks now but carrier has since stopped making them and looking for another brand that I...

Okay so my path is going from freezer coil to the cooler then out to a floor drain so what I'd do is trap the freezer after I've brought the line to the cooler and then another trap for the cooler...

Hey just gonna be installing a drain line for walk in freezer that will be common to the walk in cooler, both only have one evaporator. My question is in regards to p trap locations do I need one for...

Ive had a set for few years of the mastercool ratchet benders and havnt had any issues with them, I havnt used the yellow jacket ones so couldnt compare but mastercool benders are decent.

Whats the condition of your outdoor condensing unit, it may need to be cleaned sounds like your unit just cant keep up because it may be plugged not being able to release enough heat during the high...

Heres a link to duponts pdf on retrofitting with mo99 http://www2.dupont.com/ISCEON/en_US/assets/downloads/k22217_ISCEON_MO99_retrofit_guidelines.pdf

I also spoke with a dupont rep at a recent...

H10 hands down most accurate, it may not be as durable as some. Though it makes up for it in being able to find leaks that other detectors wouldn't pick up. If you want something that is durable and...

Thanks, will be picking one up next time I'm at suppliers.

I couldn't find any limits tripped, as for it being a possible air flow issue that would make sense since the filters needed to be changed, I changed the filters reset the board seems to be working...

Yup just operate off individual t-stats

These units are using the honey well economizers module# w7212a 1025 With the Honeywell enthapy sensor c7400a 1012

I had removed one of the leads off the enthapy sensor to verify power out on...

Hey all, I'm running into a bit of a brain buster with a bunch of newer Johnson control rtu not running mechanical cooling.
Model # J05ZFD10U2AAA1A

So here's the issue I'm running into with a...

PSIA = PoundsSquareInch Absolute, which means it includes atmospheric pressure equivalent to 14.7psi at sea level

PSIG is just PSIgauge gauge pressure not including the 14.7 absolute value

thats crazy usually engineered air stuff is top notch must have been a lemon of a bearing.

Yeah we call them marette's but thats just actually a brand name of wire connectors. Like calling an adjustable wrench a crescent wrench just first company to create them....

Blasting some nitrogen should be fine. The only real concern you need to have is to make sure you don't mix oils, so just make sure your hoses/manifold is clear of oil when switching from POE systems...

I switched over to alberta from bc as a second year apprentice, and as for hours being transferred it is quite a pain. You have to have an alberta employer sponsor you and recommend to the AIT...

If your gonna be using them enough and are willing to spend the money rigid aluminum are hands down best pipe wrenches. Or if you want to work on your arm muscles get their steel wrenches haha

Bit off your topic, How is the okanagan college's refrigeration program? I moved from the kootenays to go to SAIT in alberta to do my apprenticeship afterwards learning of the okanagan college...

Yeah, I've have come across them failing before I just found it interesting how in this case it actually shorted to common causing the low voltage to circuit to short out. Everyday is different in...

So got sent out to a call today too hot in space. Unit was a carrier rooftop unit model#48TJE006-511GA. Found that the unit happened to have tripped the low voltage fuse, replaced the fuse and tried...

I prefer Makita, mostly due to their lightweight. So far my 4pc set has been very reliable. Tried rigid found they were to bulky and batteries died quite quickly. By the way talking bout 18volt set....

I was told from an old tech in trade school that rule of thumb was to go with 5 degree for low temp applications, 10 degree for med temp applications, and 15 for high temp applications.

If it hasn't worked right since the install, I would start from the beginning checking everything, including the piping to see if there is something not set up properly. Sounds like from the info...

Any limits tripping? Whats the board giving for diagnostic codes?

"If you can dodge a wrench you can dodge a ball" Lol sorry had to say it. But yah thats definitely a lesson for yah, never trust anyone working above you, especially a plumber.