Troubleshooting - Roundup VCT-250 Equipment Manual

RAPID TOASTER VCT-250
To avoid possible personal injury and/or damage to the unit, inspection, test and repair of electrical equipment
should be performed by qualified service personnel. The unit should be unplugged when servicing, except when
electrical tests are required. Use extreme care during electrical circuit tests. Live circuits will be exposed.
Problem
No Display
No light on Power Switch
Temperature display flashes "PO."
Temperature display reads "LOW."
Temperature display flashes "HI" at
cold start.
Temperature display flashes "HI" and
"LO" at cold startup.
After preheat time, display flashes
"HI" and "USE."
Temperature display flashes "HI" and
"USE" after unit has been preheated,
and Belt Wraps may start to smoke.
Display reads "CHEC."

TROUBLESHOOTING

WARNING
Possible Cause
Unit not plugged in.
Hi-Limit tripped.
Circuit Breaker tripped
Power Cord and/or plug are dam-
aged.
Inoperable Rocker Switch (power
On/Off).
Voltage to the unit is below 190
volts.
Platen temperature is below 420° F
(216° C).
Platen Thermocouple is disconnect-
ed or open.
Inoperable Control Board.
Auxiliary Thermocouple is discon-
nected or open.
Auxiliary circuit overheating due to
auxiliary solid state relay shorted
closed.
Ambient temperature in control com-
partment too high.
16
Corrective Action
Connect toaster to proper recep-
tacle.
Reset Hi-Limit.
Reset Circuit Breaker.
Contact your maintenance person or
Authorized Service Agency.
Turn the Rocker Switch (power On/
Off) to OFF, then ON. If the display
shows "PO" again, check the power
cord and plug receptacle for dam-
age.
Reset Circuit Breaker located at
store's power panel.
Contact your maintenance person or
Authorized Service Agency.
Allow thirty minutes for warm up and
recheck display.
Contact your maintenance person or
Authorized Service Agency.
Re-attach or replace Platen
Thermocouple.
Contact your maintenance person or
Authorized Service Agency.
Turn toaster off and allow control
compartment to cool down to 140 F
(60 C) and restart toaster. Be sure
cooling fan is operating and nothing
is blocking the flow of cooling air to
the bottom of the toaster.
P/N 1010776 Rev. H 03/04
McDonald's