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Part # MCOSM06 Rev 1 (11/03/08)
Page 6 of 9
1-800-427-6668 www.garland-group.com Fax: 1-800-361-7745
From: Parts and Service Division Date: February 15, 2001
To: All Authorized Service Agencies
SUBJECT: 410, 450, 455 CONTROLLERS
(USED ON GARLAND AND U.S. RANGE CONVECTION OVENS)
CUSTOMER COMPLAINT: Timer will not count down.
We have had a number of calls on this and a lot of controllers have been replaced thinking that there is
a problem with the controller. In most cases, there is nothing wrong with the controller.
They are programmable with a cooking time of up to 99 hours and 59 minutes which means the timer
will count down by minutes when programmed for more than 1 hour.
The timer will count down by seconds if a cooking time of less than 1 hour has been programmed.
A common operator error is to set a time of 5 hours and 30 minutes (for example) when what they
intended to program was a time of 5 minutes and 30 seconds. In this example, the timer will then count
down in minutes instead of seconds and the complaint will be that the timer will not count down or it
counts down too slowly.
If the operator has programmed a time of more than 1 hour, the colon between the numbers will flash
constantly until it drops below 1 hour, after that the colon will remain solid.
COLON FLASHING – Hours/Minutes
COLON SOLID – Minutes/Seconds
To switch from Hours/Minutes to Minutes/Seconds the encoder knob is turned counter-clockwise until
passing the 1 hour mark.
To switch from Minutes/Seconds to Hours/Minutes, the encoder is turned clockwise until passing the 1
hour mark.
Contact a Technical Service Representative for additional information or instructions.
BULLETIN # B-19-2001