Fisher & Paykel 80430, Service Manual, Page: 11 / 41

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5 SERVICING
5.1 Pyrolytic Ovens
5.1.1 Electronic Programmer
Old Version New Version
EL1000
The Siebe
®
electronic Programmer is the primary control and monitor device and incorporates the
following features:
•
Oven temperature control.
•
LED display.
•
Clock 24 Hour.
•
Minute minder & automatic baking function.
•
Self clean function with door lock/unlock input.
•
Baking mode selection.
•
EEPROM unit to store and back up electronic data.
•
Single handed operation.
•
0
C indication.
•
Temperature probe input.
5.1.1.1 Operating Principles
The programmer is designed to detect various input control signals from the following:
•
Oven temperature probe ST1
•
Variable Temperature Control ST2
•
Door status microswitch ST3
•
Oven mode selector switch ST4
and outputs these signals to the following relays and triac, supplying power to the various cooking
circuits:
•
Thermostat Relay 1
•
Oven Fan Relay 2
•
Lock/Unlock Relay 3
•
Cooling Fan Relay 4 (New version programmer)
•
Cooling Fan Triac 1 (Old version programmer)
Supplied with mains 240 volts, the onboard transformer reduces the working voltage of the
programmer to 15 volts AC.