Replaced my old controller with a new ST9400C controller everything worked fine, now the backlight stays on and i cannot change any of the programmes I installed, it still works but cannot change anything, any help would be greatly appreciated.
Honeywell ST9400C
- Thread starter dodger327
- Start date
It's fooked replace it
Is it still under guarantee? Try a call to Honeywell.
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- 21 May 2005
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Have you tried the reset?
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