HVAC control unit issues

[Matt B]

I occasionally have random ssues with my air conditioning. Such as

- system spontaneously falls back to "default" mode (24?C, AC on, all on "Auto", etc)
- system won't react to pushing any control unit buttons
- led flashes with no noticeable impact or failure code set
- led flashed with low refrigerant failure code but AC blows ice cold
- led flashed with low refrigerant failure code and no AC operation. Battery disconnect fixes the issue and AC works fine again with no codes

I suspect that the HVAC control unit has issues.
Is there a fix such as swapping capacitors as you normally do on Bose the various Bose components?

Or will swapping the whole unit be the way to go?

I'd prefer a fix as my unit ist like new...

[Starman]

I had the same problems several years ago. Pulled the unit, replaced the caps and reheated some cold looking solder connections. Has worked perfectly since - over 12 years. Remember to pull the screw in the vent at the top of the center stack bezel.


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[KPW]

Same here, I used this kit: https://batee.com/collections/1990-1996-corvette-parts/products/90-96-c68-ecc-ac-hvac-restoration-kit


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