Air probe bad…. Changed
Outdoor sensor bad… Changed
Defrost sensor bad…. Changed
Checked all sensors with ice water. All old sensors with in 5k @ 32*.. 27k – 32K HUH??
Board not telling me sensors are bad anymore. Fired up unit and get immediate A1 and temp reading. Kicked board it into test/clear. Unit went into dly and started. Still giving an A1 temp code… hummmmm Reset power and watched this puppy fire up on its own.
Let it run overnight and came back to find a frozen up mess all the way back to the rooftop tin man. Kicked it into force defrost and watched it melt away. Both fan blades have stress cracks, replace them too.
Fired up the unit and checked superheat settings on program review. Sup set at 8… all other program settings are looking good. Monitor saying sup at 8 but I didn’t believe it so I took a manual superheat. I found the EEV hunting from 10* to 15* while board monitor saying 8*. Hummmmm
Freeze up, duh….Bad board right? OK.. made all kinds of calls, It was 9AM Saturday. No Heatcraft vendor has any Beacon parts in stock except a Beacon 1 board…. We were able to contact Ray… he is the Heatcraft wiz that designed the board… I met him 30 miles out of town and got a board and probes from him. (Nice guy and smart as heck) Installed his board but it gets hung in a loop and calls for service… WTF??
Called another buddy of mine that does a lot of Mac work.. he had two take off boards he thought were good…. Also thought I would like a transducer since his shop is a candy store for Beacon. Darn.. only EEV and transducer he has is out in a truck. Drove another 45 miles out of town and got his boards.
Installed his newest looking board… same thing, in a service loop, unit won’t even come on much less go into a delay. What now??? EProm flash on the new boards were 1.8 and 1.7 version. Old board was 1.0 version. I took the last board I had. It was a 1.3 version software and wired it in….. hungrier than a butt munching elf and more tired than I should have been after 3 hours of sleep I fired this one up….
BINGO… set the program review to elec, 404, 8* 4 defrost.. and so on. Killed the breaker and reset. It held all programming. Board flashed freezer temp and popped into dly. 4 minutes later this puppy started to pull down.
Let it run for about 20 and temp was below 20*. Went to monitor for superheat check… 9*…. Took manual reading… BINGO 9* ! !
I will let this puppy run the rest of the weekend and go back for recheck and billing… Question is… anyone else ever have a cluster F**K like this on a Beacon II or am I just lucky it wasn’t worse ??