Lang ECCO-AP, Service Manual

Page: 38 / 73

37
TROUBLESHOOTING ECCO-C
!
To help troubleshoot the oven you should perform the following “Manual Override” test:
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Open drop down door located on the lower right side, directly below front panel.
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Turn back up toggle (on/off) switch to “on” position.
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Turn main power switch to “on” position.
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Check oven for normal operation.
NO DISPLAY
PROBABLE CAUSE CORRECTIVE ACTION
Power switch is not turned on
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Turn power switch on.
Defective power switch
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Check power switch for normal operation. Replace as necessary.
Defective back-up relay
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Check relay for normal operation.
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Check coil for 24 VAC.
If 24 VAC is measured. Turn oven off and:
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Check coil for 7.2 K
Ω
.
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Replace as necessary.
If 24 VAC is not measured.
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Verify that manual override switch is in “off” position.
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Check manual override switch for normal operation.
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Check wires for any shorts.