AM-50BAE Hoshizaki Ice Machine will not Harvest

[Earl Dryer]

Ice Machine Makes cubes and goes into harvest cycle; pump stops, water fills about 30 seconds, compressor continues to run no reversing valve (do get an occasional voltage spike). Have no tech's on this guy but wiring diagram indicate a relay on the control board the N.O. contact being the Reversing Valve & the N.C. contact being the pump. The relay is working if the pump shuts down but why do get a momentary voltage reading then nothing. I have seen relays do crazy things so I am assuming that I have a bad control board. Any ideas on where to find a board and the tech manual for this puppy?
The board Part # is 463046-01.

[JWWebster]

Manny for AM-50BAE

Get the parts here: http://www.partstown.com/

Edit: from the parts manual it looks to me like their is a hot gas solenoid on this model.

[Earl Dryer]

Thanks, JW that is where I got the part # but they don't have it in stock, Need one yesterday, if you know what I mean. Went to the Hoshizaki site Can't afford there 348 smackers. Smack me silly that's twice as much as partstown.

[Earl Dryer]

JW there is a hot gas valve but I ain't gettin no juice to it.

[jumptrout51]

http://www.hoshizakiamerica.com/techtips/Pdf/All/Tips195.pdf

Here is a condensed version.
Check the X1 X2 relays and the thermister.

[Earl Dryer]

Thank you Jumptrout, This is pretty much how I assumed the the cycle worked and at 1st I thought that it probably was the thermistor (where it is located and all the crud collects around it) but the machine makes all the right moves that why I was leaning toward the
x-2 relay.  I did forget however that the startup is in the harvert cycle, therfore the thermistor is out of the picture so, if I get voltage at the hot gas solenoid then the thermistor is probably the culprit and if I don't then I have a bad relay. Sound logical to
you.

[jumptrout51]

Yes it does. That is where I would start.

[JWWebster]

Plus the thermister is way cheaper

[jumptrout51]

http://www.hoshizakiamerica.com/TechSupport/TechTips/Pdf/Im/AM-50_training_manual.pdf#search=%22im%20control%20boards%22

More detailed manual.

[Earl Dryer]

Thanks again, I tried the power on test this morning, the hot gas solenoid valve had 120v
reading but it was chattering with minor meter movement, could not tell for sure what was
chattering the relay or the valve. Turned the machine off for 10 min. this time all I got was water inlet no hot gas, tapped on control box with a screwdriver and the valve kicked in, checked for loose or broken wires and funky connections but could not find any, I,m
betting on a bad relay. I eliminated the gas solenoid by test with test cord.

[Earl Dryer]

It was a bad relay.  Replaced the board and man this machine can make ice, it is a real shame that one has to buy a $200 board for an $8 relay.

[fixyourboard]

Hi Earl,

Can I get the old board from you? This may be a good one for us to reverse engineer to get on our repair list.

Best Regards,
Bruce