Welbilt Manitowoc RCU1075, Technician'S Handbook, Page: 136 / 288

136 Part Number 000007661 Rev02 02/20
RN1000/RN1400 Troubleshooting
NOTE: Refer to “RN1000/RN1400” on page 36 for normal
sequence of operation
INDICATOR LIGHT OPERATION
The lights on the control board can be used as quick
failure mode indicators. If the failure mode isn’t
obvious from the light indicators, use the flowchart to
systematically eliminate issues.
NOTE: Each relay on the control board has a light adjacent
to the relay to indicate the relay coil has power.
Indicator light legend
ON OFF ON or OFF FLASHING
1. Normal light operation, No Ice
• Defective compressor or start component
• Defective contactor
• Defective control board relay
PURGE (Y)
PO
WER (G)
LO
W BIN (G)
AU
GER ON (G)
REFRIG ON (G)
CLEANING (Y)
SE
RV
ICE (R)
HI
AMPS (R)
HI PRESS (R) LO
PRESS (R)
DRAIN CL
OG (R)
TIME DELA
Y (Y)
LO
WA
TER (R)
CPU (G)
HI
WA
TER (R)