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40
TROUBLESHOOTING ECCO-C CONT’D
NO MOTOR Computer Mode
PROBABLE CAUSE
CORRECTIVE ACTION
No 24 VAC on Interface board
Check for 24 VAC at
TP4
to common (
“D”
).
If 24 VAC is not measured:
Check for 24 VAC at “
NC
” contacts on back-up relay.
If 24 VAC is measured:
Check for 24 VAC at
TP5
.
Replace Interface board if defective.
NO HEAT Manual Mode
NOTE:
Fan must be operating before trouble shooting No heat.
PROBABLE CAUSE
CORRECTIVE ACTION
Back-up relay not energizing
Check for 240 VAC on relay coil.
If 240 VAC is measured.
Turn unit off and:
Check back-up relay coil for 7.2
Ω
.
Check “
NO
” contacts for 24 VAC.
Replace if defective.
If 240 VAC is not measured:
Check back-up switch (SPDT) for normal operation.
Replace if defective.
Defective thermostat
Turn unit off and check for continuity while cycling thermostat on
and off.
Replace if defective.
Defective contactor
Check for 24 VAC at heater coil.
If 24 VAC is measured.
Turn oven off and:
Check for continuity through coil.
Replace if defective.
If 24 VAC is not measured.
Turn oven off and:
Check for continuity through hi-temp wires going to over-temp
thermostat.
Replace over-temp thermostat if defective.
Defective elements
Check elements for continuity.
Replace if defective.
Defective over-temp thermostat
Check for 24 VAC on #55 red wire to common
“D”
.
If 24 VAC is not measured:
Turn oven off and:
Check for continuity through over-temp thermostat.
Replace if defective.
Summary of Contents for ECCO-T
Page 27: ...26 GENERAL CONT D ONE PAN TWO PAN THREE PAN FOUR PAN FIVE PAN https appliancetechmanuals com...
Page 53: ...52 WIRING DIAGRAM ECCO T 208 240 https appliancetechmanuals com...
Page 54: ...53 WIRING DIAGRAM ECCO T 480 https appliancetechmanuals com...
Page 55: ...54 WIRING DIAGRAM ECCO AP 208 240 https appliancetechmanuals com...
Page 56: ...55 WIRING DIAGRAM ECCO AP 480 https appliancetechmanuals com...
Page 57: ...56 WIRING DIAGRAM ECCO SII 208 240 https appliancetechmanuals com...
Page 58: ...57 WIRING DIAGRAM ECCO SII 480 https appliancetechmanuals com...
Page 59: ...58 WIRING DIAGRAM ECCO C 208 240 https appliancetechmanuals com...
Page 60: ...59 WIRING DIAGRAM ECCO C 480 https appliancetechmanuals com...
Page 61: ...60 WIRING DIAGRAM ECCO PP 208 240 https appliancetechmanuals com...
Page 62: ...61 WIRING DIAGRAM ECCO PP 480 https appliancetechmanuals com...
Page 63: ...62 WIRING DIAGRAM ECCO PT 208 240 https appliancetechmanuals com...
Page 64: ...63 WIRING DIAGRAM ECCO PT 480 https appliancetechmanuals com...