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Thank you, VTP99 that flow chart is nice.

Is that a Manitowoc document or just something handy you picked up over the years?

Every time I get a call back on this thing having iced over, it's...

How does a malfunctioning water probe cause harvest to initiate?

Checking the min/max on a date known to have had a harvest failure is an excellent idea.

I'm going back tomorrow and I'll check...

Are you referring to distribution bar at the top of the plate or the water inlet tube going into the pan?

I have not checked either specifically for being loose.

There is no erratic harvest behavior with this unit.

There is an intermittent failure to successfully drop ice on a very infrequent interval.

In fact it has never failed to successfully drop...

Harvest is initiated by an (acoustic/sonic?) ice sensor.

On a previous run I monitored 100hz/120hz throughout multiple freeze/harvest cycles and there was no indication it had failed but I had a...

Thank you for clarifying this for me.

I will add this to my bag of "need immediate operation" tricks.

I have worked on walk-ins for a few years now but not exclusively. I have yet to come...

Pressure values measured at front access service ports:

1st harvest
75 low and 147 high

2nd harvest
77 low 149 high

*note: psi values recorded in final few seconds before curtain trip

160° compressor discharge temperature immediately before harvest is initiated, (12 minutes run time) but I don't have a discharge temperature value at 8 minutes into freeze cycle

I've not been exposed to this control scenario before but if I understand what I'm reading, the off cycle is controlled by the low pressure switch and there is no pump down due to non-functioning...

There is moisture or some other contaminant in the system

A system component is off-gassing under vacuum

Vacuum rig is leaking between system and point of isolation

Component of vacuum...

Mod# IY1894N-261

Tech I spoke with says that because the outlet side of hot gas valves are cooler than inlet side 8 minutes into 12 minute clocked freeze cycle they are not closing properly.
...

I thought it was odd as well. I suspect heat likely played a roll. The wire tie was not tight really. I'm replacing the molded compressor harness and the high temp sensor and when I do I will use...

Well, there's your problem! Short at last factory wire tie at base of compressor. Short between compressor start winding lead and lead to high temp. sensor on discharge line. Thank you all for your...

I'm thinkin the same thing. In the wired wrong scenario though, someone would've had to gone out there and done so. I'm going back this morning, will go through wiring with a fine tooth comb. I'll...

Honeywell Vision Pro 8000 series. Low voltage...

Everything is connected exactly as it was before I got there.
The boards were fried before I was called.
I replaced the fried components and when contactor closed same parts fried again.
This is...

Working on a Trane heat pump. Thought I had mod.# with me but I do not. Its a 5 ton, think it said XL15 or XI15 on the logo if thats any help. May not be a model specific problem, but I have never...

I usually wire the condensate safety switch to break R. 99% of the time I install a stat powered by equipment x-former. In the case of an erratic float it should cause the stat delay to come into the...

+1

Compressors are generally louder on start up than they are when running at operational speed. It is hard to say whether the noise you are hearing is normal or not without being able to hear it, but a...

Wow, that is quite unorthodox. I did not notice, I guess I should have paid attention to where the lineset was routed.

Well now I can see the indoor equipment pic. of the new install.
No wonder the HX is so ate up. I did not realize it was on the discharge side of the coil. The new transition from the filtration...

I don't see any pics of the furnace install
:confused:

This is the model impact driver I have:
http://www.hilti.com/holcom/modules/prcat/prca_popupproductpic.jsp?OID=20395
The SID is 1/4" hex, the SIW is 1/2" square.

This is the model hammer...

I'm finding myself disapointed in the wireless capabilities of my 556. I bought the whole setup expecting to be able to monitor liquid line temp. at the evap. coil while adjusting/checking system...

Thanks for correcting my impression, I'm sorry, I'm never very good at accurately interpreting the tone, intent or direction of dialogue in text.
After re-reading your post it seems you are...

Thank you Jim for the mildly dissapointing answer to my question, you are the ultimate go to guy on Testo product. Does the 625 receiver display direct WB reading based on data from the same handle...

No, I have to ask someone why I am not getting a WB reading directly on the display of this Super device. Some Super device that cannot x-reference the wet bulb calc. on its own., and cannot provide...

I got out of Dewalt a couple of years ago. I've used Bosch, Milwaukee, Makita, Porter Cable, and maybe another one or two. Hilti cordless impacts and drills are unmatched by anything I've ever used....

Testo instructions leave much to be desired. I finally have my 556 wireless up and running, it is super awesome. I just picked up WB probe head part# 0636_9736, today that works with the wireless...

What about the 506? Supply house has a 510 and a 506. The 506 reads in W.C. out to 1000th and the 510 reads out to 100th. I like as precise a tool as I can have but I'm not sure if the 506 (other...

How do you go about cleaning it?

Any opinions good or bad about the JB DV-22N Micron Guage? What micron guage do you guys find to be most reliable? Should sensor of micron guages be cleaned or serviced periodically?

Well I still have not made the purchase. I had pretty well settled on getting the 1250. But after continuing to check out my options, I'm up in the air between them and the Testo 556. I am under the...

I'll check out the MFM300. Seems like hoses would be a good thing though if you need to adjust charge.

Thanks everyone. I intend to place my order tomorrow.
Bar clamp vs. spring/plier clamp seems tough to figure out though. Seems like the spring/plier syle clamp would be quick and strong connection...

I've read a good bit here in the forums and it seems all opinions point to the Digi-Cool guage unit as being superior. Am I correct in this conclusion or have I not read everything that I need too? ...

I'm bidding my first commercial job and hoping one or more of you guys may have experience enough to look at my numbers briefly and tell me if I've missed anything and if I need to make any...

I suspect they would work in conjunction provided that the discharge of the power vents were not cumulatively greater than the air intake available from the eave vents.

Temperatures in vented attics commonly exceed well over 100 degrees in the summer months. Power venting will reduce temp. but at a cost of electrical usage and significant noise factor. There is...

Something that apparently is very incorrect about this install is that the sight is only 5' from the compressor. Filling to full sight would require liquid for over 100' feet of lineset. Should'nt...

Mr. Fox, I'm sorry I made that statement on the first page of this thread. I believed what I was told by the distributor about charging this system, to be true.

Ok guys here are the #'s

YORK
Outside Unit:
Mod# H2CE120A25A

Indoor AHU:
Mod# K3EU120A33B

I have removed and repaired the condensing coil. My plan at this time is to reinstall the coil,...

To brettIn - if you'll notice I did ask questions. I asked for superheat and/or subcooling charge info. and was told it was not available. I was then told to charge it the way I did by what should...

I wanna thank all of you again for your replies to this post. There seems to be alot of suggestions but I see the majority lean toward potential compressor problems. Websy mentions that depending on...

There is no factory charge stated on the rating plate. I gather that from what I'm being told from you guys I should pursue speaking with someone at YORK about unit specific charging tables and weigh...

I called the York distributor in my area and asked for charging tables. The tech. support guy said that there was no charging info. available for that type of unit. He then asked me if there was a...

You do not give reasoning for diagnosis of over charged. This size system is to be charged until no vapor is present in sightglass when running under stabilized conditions. Also the head pressure is...

You should contact the manufacturer of the unit for the proper components to perform conversion. Typically involves changing burner orifices, regulator spring and if applicable the pilot orifice....

I looked at a 10 ton (2-5 ton comps.tandem) YORK commercial split system today. The sight glass showed significant vapor circulating through the liquid line. I added refrigerant until the sight was...