Alarm 38 on unit THERMO KING UTS 400

[incar]

Hello, I have a problem with ALARM 38 on THERMO KING UTS 400.... can we help me, please?? Thanks

[jazzhands]

Electric phase reversed? That's what's on my tk alarm list anyway.

[incar]

Electric phase reversed? That's what's on my tk alarm list anyway.
Thanks for reply, Is it possible to bypass it??

[jazzhands]

Honestly not sure if u can bypass it. Im Sure someone on here will be able to answer that.

[incar]

I hope....

[jazzhands]

http://www.xtralease.com/SiteCollectionDocuments/Reference%20Guides/Thermo%20King%20Alarm%20Codes.pdf

[cadwaladr]

change two of the phases around on the incoming plug/swap two wires around on incoming.

[incar]

change two of the phases around on the incoming plug/swap two wires around on incoming. I have already changed the two phases but always appears the alarm... and now???

[cadwaladr]

guess its the module that sense,s the incoming power,it should be strapped to the incoming at the contactor,disconnect the three wires and see what happens DONT FORGET TO DISCONNECT THE POWER SUPPLY FIRST!

[incar]

guess its the module that sense,s the incoming power,it should be strapped to the incoming at the contactor,disconnect the three wires and see what happens DONT FORGET TO DISCONNECT THE POWER SUPPLY FIRST!When I disconnect the three fase on module, the unit run on diesel mode... Is it possible to bypass the module??*

[Mick Carroll]

Check to make sure you have correct voltage at the contactor, Not possible to bypass the module.

[incar]

Check to make sure you have correct voltage at the contactor, Not possible to bypass the module.
At contactor (wherethe 3 phases arrive in first time) I have the correct voltage

[gravy258]

i'd be sure its the auto phase reversal module on the relay board, the black box looking thing in the top RH corner.
TK SR units all have this.

[incar]

i'd be sure its the auto phase reversal module on the relay board, the black box looking thing in the top RH corner.
TK SR units all have this. I know it and I wanna know if it is possible to bypass the module... I dont want change it

[IRMechanik]

I know it and I wanna know if it is possible to bypass the module... I dont want change it

as stated, not possible to bypass the module.
Early revision interface boards had the module integrated into the board (grey cover)
Later revision boards have it as separate module (black box)

[incar]

how can I be sure that the alarm 38 is caused by this module?How much it cost??

[IRMechanik]

how can I be sure that the alarm 38 is caused by this module?How much it cost??

Based on what you've told us and the armchair diagnostics of several experienced techs, it sounds like the module. As I tell people over the phone, hold it up to the phone and I'll tell you what's wrong.

the only way to confirm the diagnosis is to plug a new module in. Unfortunately the second you plug in an electrical component, you own it.

Unless you can find someone with a good used one you can try, your options are pretty limited.