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The reversing valve coil might be going out/ohm it out/
question can you use a megger on it?
Good Luck getting to the controls

T-stats just tell the unit how long to stay on / to meet set point.
Is the heater size correct/what about heater output/cfm/ many factors
to check out .What is the temp. at the supply vents?
Good...

Heat pumps always have the compressor running.
Did you try checking all the functions at the unit it self /not using the
t-stat as a control?
Good Luck

Mammoth
hydroband/Sol.A.Terra 1/Sol.A.Terra 2
I have some info on them,if this is the models you have.

Welcome to my world.
Looking for VVT gen2 software/PC Command Center/
ccn 3.0 will not work /
Thanks

What happened to Catfly?
ccn 3.0 will work on later vvt / not gen2/
Still looking for vvt gen2 software / PC Command Center
Thanks

Catfly Did you find a copy of ccc 3.0? Iam looking for VVT gen 2 software/
PC Command/ just got a new project /

I use the supco data loggers/work great.

The fan operation can be changed by using the service configuration-service:Service Configuration screen.(CCN 3.0) Communication problems show up as (comm fail) Communication is not the problem to...

The same thing happens to my controllers.Brown outs/ power changes/
The unit has to be powered down and restarted. I gain control of the unit again after that.

fonders,using an air compressor to clean with just moves the dust,ect to a new location.

You pay rent, have the landlord answer the question.l

Can you cut down on the outside air intake and use more Bld. return air.
Good Luck

Did you ever get the problem solved?
NOT a good idea to use used parts.
Evap coolers are basic/ Ever have any electrical problems
in the bld?

Have you checked the maker of the vav box?
The tool i use is magnehelic guage .
T-stat calibration i use a psi guage and a thermometer.
Good Luck

Did you ever get your vac/pump? I use two inch clear tubing/clear to keep an eye
on the water flow.

I have a lot of fun on a service calls.I just set up my laptop boot it up and log on to the system.The comments you get when you get the unit going again,and all you did is use your laptop as you...

The RS-232/RS-485 converter I use on my old laptop has never failed me yet,some controllers have been bad with no default address and could not be found even with the loop disconected and pluged in...

The Element Set Program works great. Have you used the comfort view search tool ?

Thanks for the info. Refill is the only way I go.The tank stays with me and my grill !