5 - 25
Section C
Electrics
9803/6400
Section C
5 - 25
Issue 1
Pump Control
Display Monitor
Radiator Water Temperature
Circuit Diagram
1. Overheat switch position and the ON signal of the thermostat sensor are OR processed and number 8 is lit.
2. Overheat switch position and the OFF signal of the thermostat sensor are AND processed and number 8 turns off.
3. Number 8 is lit on the condition that numbers 1-7 are lit.
4. When numbers 1-7 are off and the signal for number 8 is transmitted, they light-up in numerical sequence after a 30
second delay.
5. Number 7 is put out on the condition that number 8 is turned out.
6. If the signal to switch off number 7 is transmitted when number 8 is lit, the lights-out signal of the Thermostat sensor must
also occur.
7. When number 8 is lit, 'OVER HEAT' is indicated.
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