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Improper grounding of the RTU, or a weak ground can also cause that alarm. We had a building in our territory that had the exact same experience for almost 4 years. We would monitor main power, unit...

Hey CJ,

if it hasn't been done yet, you can increase your Hi SST alert delay from the factory setting of 10 minutes up to 30 minutes. this will allow the logic to give the unit a little more time...

We always preach to use a little shop vac and that heavy brissel brush that comes with most shop vacs. The brush that you wonder what would I ever use this for? It is great on the dust those wheels...

Perhaps these instructions may help? These are the retrofit instructions to convert gas units from mercury flame sensor to flame rectification

Taking a guess, but believe you have a 30XA. If ordered with the factory transformer (trans 4) it is powered off the circuit B fan circuit breaker.

The control power (115vac) can either be powered...

No problem chil, the password on the XA and RB is 0111.

Not sure which tech would have done the work, but CCS did all the reworks on all machines built before week 36 of '08

that machine was reworked back in October, 2009 so it should have the new heaters on it. You might want to shut the machine off and let the heaters cool off. Then ring out the heaters, should be...

Hey U P could you get us a serial number? for our history? Thanks!

you are correct, the compressor would be a 5H series. The number 5Mh86 is an actual part number for the crankshaft if that is what they are looking to replace?

If flow reads OFF - under inputs>gen.I>flow= off (open flow switch) - either there is actually not enough flow through the machine or the flow switch is bad? The signal back from the flow switch...

If its a series 2 or 3 the part number should be S-4004AU

Excellent explanation Turbo!! :)

Yes, a few manufacturers do make a recessed fan coil unit. At Carrier it is our 42 Series unit. They can be stacked units (typically found in high rise buildings) or horizontal mount. They can be...

No sir, no need for a pump as we ran all the lines up from the basement to each fan coil unit. All the condensate return lines come back to the main green water drain line that runs across the...

Don't have any radiators anymore. Took them all out and gained all the floor space. All the fan coil units are high wall style. when we pulled the supply and return water lines we also included a...

the pex was oxygen barrier pex. No particular reason in this case. It's going to get 44* water in the summer and 150* water on the coldest days in the winter.

the control panel looks alien? :)...

Design was based on each room. In other words, sized each rooms fan coil unit, then sized a chiller and boiler to handle the water required for all the fan coil units. That is a 5 ton unit, but the...

Chose Multiaqua for my house, but mostly because we sell it out of our direct Sales Offices. Chiller/heatpump with 8 indoor high wall fan coil units. So far it is paying off outstanding with the...

We prefer a minimum of 10 minutes if fresh water or 30 minutes if brine and being used to make ice. This is after the last compressor stops on the machine. If the machine was controlling the pumps,...

visit www.carrieruniversity.com for complete list of courses, topics, and schedules.

Most of the XA classes are planned to be out in the field this year and many of them are sold out already. You...

ASCJ,

The code 9 is a software issue internal to the board. It will reset upon a power cycle, but if the problem continues you do need to replace the board. It is offically labled "software...

How about hooking up a signal generator to the same input you are using and see if the CEM board still reads incorrect data. If so the board is bad, if not, then your device is bad? That is how we...

Believe it or not we mix 5w30 with never sieze. It takes a while to break them down and mix up and you need to get it thin enough to work in a spray bottle, but it works great, cleans up easy and...

Did you confirm your incoming voltage is stable? That usually causes this issues. Physically check your torroids to make sure they are completely connected, no loose ends? Depending on which torroids...

It is an 18,000 BTU unit rated for 8.4 SEER when it was new.

Freonrick and thegoodlistener are both correct, it's against regulation for us to have a schrader under any manual high pressure switch. We don't make the rules we make the equipment per the rules.

the sensor is receiving 24vac from the main control power via the red wire and sends back a floating 0 - 24vdc signal back to the MBB. When the 0 - 24vdc signal reaches 18vdc the input accepts that...

Pach,

Email me your information and location so I can see why your machine is not completed. Email address is in my info.

Thanks,

Believe the part you would be looking for is actually labeled as a "valve body" but it consist of the parts for that schrader access you are looking to repair. The replacement part number is...

Jrbenny is close. The machine will go into this mode if it starts more than 5 times in 60 continuous seconds. This mode will prevent the machine from short cycling.

MD26 – Short Loop Override...

Here is the sequence for the minimum load as well as close control:

Minimum Load Control
A metering solenoid valve that acts as an orifice accomplishes Minimum Load Control for the AquaSnap...

They can be one of your most valuable tools you may ever invest in. Like you have read above, they can hold more information than you could fit in manuals on your truck.

Plus, we have made so many...

jwhite,

I can't put the PDF on this site because of it's size. Email me and I'll send you the wiring diagrams as they would have been wired from the factory.

Chill,

You could have simply sprayed a little contact cleaner into the phone jack in the rear just to make sure there is no rust building up in the jack. That is a problem we have experieced in...

Chill,

oddly enough there are not that many different boards for the different machines we make, and the common link to communications between the boards would be the red LED on each board. That...

Dan,

The easiest way to test the MBB is to have it hooked up to your laptop, if you have service tool or CCN software. It is possible that the MBB has an issue with it's software, but the only way...

Dan,

Main Base Board

To identify the boards look at the "J" terminals (white in color) as they will have the respective lables for the boards and which terminals they are.

Dan,

That's pretty much all that causes that alarm. Either a faulty motor temperature sensor, an actual failed motor widings, or a wiring issue between the motor temp sensors and the CCP. When...

Carey,

There is a bulletin release sent to all our service offices regarding the issues we found in the coil failures on our 30RB and 30XA series machines.

Brief explanation: The problem lies...

Your unit, model: 50BU-012---530-- is actually serial number 4392F22200 and it was shipped out of the plant on 10-21-1992.

Were there any bets on this?

Thanks Abs. Will try to visit more often. :D

Hey Rot, if you would like, email me and I'll send you the literature and a small power point on how the navigator or the marquee display work.

Any of the 30 Series Chillers come with a marquee display to access any and all of the configuration points. The screw chillers, like the HXC and XA, all come with the Navigator display. The...

Heatingman,

I tried running those numbers and they do not match. Can you give me the complete number off the fan sled? We did not make a size 13 fan, we have a size 12 and size 15 and we did not...

Uke,

Your model number was close. Here is the data:
Model: 39MN10A00360722CXS
Serial: 0503F14849
Built on 1/29/2003

Unit was ordered with all factory mounted controls and our Air Monitoring...

Uke,

Believe you have too many numbers and they are not exactly in the correct order. Can you give us the serial number or the ODS number?

Cyro,

Email me the photo and any other information you may have. At 45 years old that is going to be either a 39B, 39C series unit. We still make and sell a lot of the needed parts to replace on...

Scho,

Email me (my email address is in my profile) and I'll email you the service manuals.

Now, Now everyone.... Are you sure the problem is not with the distributor you are trying to reach? If you were truely trying to reach Carrier, just call 800 carrier and you will get a real talking...

LTC,

T137 - Circuit A Low Discharge Superheat Alert
T138 - Circuit B Low Discharge Superheat Alert

This alert is ignored for the first 3 minutes of circuit operation and there can be a number...

Most likely your PSIO I loss power and the battery in it was probably dead, so now you have a PSIO with no logic in it. You can order replacement batteries (they are the physical size of a AA...