Walk in freezer

[bnick99301]

not gonna lie I installed a pump down valve backwards once....we all know what that would cause..........needless to say that got fixed...

[traviscmatthews]

2Sac nailed it on the head. Quit touching our equipment you hack.

[54885488]

2Sac nailed it on the head. Quit touching our equipment you hack.

Do you need a hug ?

[markettech]

check txv screen it's clean turn off avap.fan to see flow of refrigerant , frost was building all across evap coil follow sporlan instructions to adjust SH left unit running all night chk next morning box temp went down to 20*F. 1/4 turn stem to chk if it goes down further. I am debating if there is a mismatch. I have collected all the info.will do a serious anylisis.

Obviously I'm a little behind the curve on replying here, but if you adjusted SH via Sporlan instructions - what did your final superheat reading come in at?

Furthermore, when you started working on the unit the outside ambient was ~100F and head pressure was 350 psig - giving you an almost 30F condenser TD......which ain't right.

After changing the LL solenoid valve, you stated the head pressure was reading 225 psig. What was the outside ambient?

A guy shouldn't be horkin' around with the TXV until he's darn sure he has enough gas in the system....

[Mrak]

If what you are describing is what I think you are. 1-very low suction pressure yet head pressure is normal or maybe a bit high? It sounds like you've done a good job cleaning up the system. Evacuating and putting the proper charge in. You've replaced the drier and the liquid line solenoid, correct?
I would suspect that possibility that the power head assembly has lost it's charge which would shut off the expansion valve. Just a thought. I've had many powerhead's lose their bulb charge and it has some of the symptoms you've described. Also you can have a wax build-up that can plug up the txv. But again, you've cleaned up the system which should have taken care of that possible problem.
Hope this might help.
Mark

[Qamar]

I almost gave up but next day i went back turned off the evap fan i see frost building up which gives me idea that that evap was not flashing gas because of fan running so i try looking for DTFD it was fried ireplaced DTFD unit went down to -5* so that was the problem thanks

[shaka]

I almost gave up but next day i went back turned off the evap fan i see frost building up which gives me idea that that evap was not flashing gas because of fan running so i try looking for DTFD it was fried ireplaced DTFD unit went down to -5* so that was the problem thanks

.?
What..?
I don't understand
None of it make any sense to me.
I think there is something you are not telling us.
Box don't get cold enough but when you replace termination fan delay
The box drop?

When u turn off the fan you had an idea?
It's not flashing gas?

Qamar
Let me guess
You are working on your own equipment.
You don't want to call the tech back ( too expensive)
So you will fix it yourself.

[lytning]

Defrost heaters on ?
Replace enough parts and just maybe you will get lucky.

.?
What..?
I don't understand
None of it make any sense to me.
I think there is something you are not telling us.
Box don't get cold enough but when you replace termination fan delay
The box drop?

When u turn off the fan you had an idea?
It's not flashing gas?

Qamar
Let me guess
You are working on your own equipment.
You don't want to call the tech back ( too expensive)
So you will fix it yourself.

[timebuilder]

The evap should flash MORE gas with the fan running.

I think that like a broken clock is right twice a day, you managed to stumble on a defective part, but you need to learn diagnostics.

I have to agree that it is unlikely that you are a trained technician, because you seem to lack the fundamental knowledge which you SHOULD know....

[kamersoutdoor]

.?
What..?
I don't understand
None of it make any sense to me.
I think there is something you are not telling us.
Box don't get cold enough but when you replace termination fan delay
The box drop?

When u turn off the fan you had an idea?
It's not flashing gas?

Qamar
Let me guess
You are working on your own equipment.
You don't want to call the tech back ( too expensive)
So you will fix it yourself.

^^^^^^^^
I don't get it either!
Still sounds like you're stumbling and fumbling!

sent from my Samsung Galaxy Note

[shaka]

Defrost heaters on ?
Replace enough parts and just maybe you will get lucky.

Yes I think that's what he is doing
Keep throwing parts untill it's the right one.
Heater won't be on
Not in the same circuit as TFD.

[timebuilder]

The defrost termination energizes a solenoid behind the time clock, and that circuit is backed up by a separate timer that stops the defrost after a set time, such as 40 minutes.

Not the "same circuit," but several circuits, working together.

[Qamar]

I came this far after 32 or 33 threads I accumulated enough info to understand operation of Walking freezer .And this acquired knowledge help me to troubleshoot in systematic fashion which help to pinpoint the problem. W/20*F box temp i Did'nt see any frost on back wall of evap. after turning off fan i see frost building across the coil which led me to check defrost t/stat which was defective i replace it turn on the unit temprature start dropping. There are people in this wrld who value ur effort this cstmr is one of them.
Will work for knowledge

[kamersoutdoor]

So heaters energized throughout defrost cycle until terminated by fail safe?
This could have been easily determined during initial visit!
Besides, fail safe should be set at only 25% over.

sent from my Samsung Galaxy Note

[2sac]

3 pages and it's still walking. You'd think it would be tired by now...

[shaka]

3 pages and it's still walking. You'd think it would be tired by now...

[timebuilder]

It seems we have a lot of walking boxes lately...

[ryan1088]

It seems we have a lot of walking boxes lately...

They are just trying to keep their New Years resolution of weight loss.

[timebuilder]

They are just trying to keep their New Years resolution of weight loss.

All they have to do is get warm inside. They'll lose weight real fast!

[DLZ Dan]

3 pages and it's still walking. You'd think it would be tired by now...

must be on a chain and not going far.