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Mend Optima 901 Heating Timer Failure

time clock failure?

optima 901 will run for weeks ok, then forsome unknown reason without a mains failure, the timer clock returns to showing all zeros and flashing. loosing the pre-set programs, after resetting the clock, it will probably run ok for days or even weeks before showing all zeros flashing again. Please help. mike.adamson`1944@btinternet.com

Mike Adamson
January 2006
OptimaOptima 901Heating, Home Heating SystemsHeating Timer Failure
renault scenic 2003 new shape clock wont keep its memory or does trip computer hold its memory

neil
June 2010

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Optima 901 Clock Failure - Help & Fixes