Viper Service Manual
Publication Number: 621260373SER
- 22 -
© 2008-2016, Cornelius Inc.
The possible messages from the control system and a description of the errors are shown in Table 6. The button
functions are described in Table 7.
ERROR
STATUS
12:51P
MAR 04
#1 MOTOR PWR
COMP HIGH
BACK
Figure 16.. Error Status Screen
Limp
A Limp error is an error that doesn’t prevent the unit from operating,
but limits functionality.
Table 6.
Displayed
Message
Action
Type
Description
HOT GAS
Off
System
Occurs when the barrel outlet temperature exceeds 115
o
F for more than one
minute and the compressor is on.
HOT BAR-
REL
Off
System
Occurs when the barrel outlet temperature exceeds 115
o
F for more than one
minute and the compressor is off.
MTR CTL
FAIL
System
The motor controller reported a fault, triacs are shorted and there is a loss of
motor on/off functionality.
TCO OPEN
System
TCO (Temperature Cut Off) has occurred on the refrigeration outlet of a bar-
rel or the 24VAC power has failed.
COMM ERR
IO
System
A communications error occurred between the IO board and the UI board.
COMM ERR
MTR
System
UI board cannot communicate with the motor board.
BARREL
REFRG
Barrel
Compressor has been on for more than 45 minutes and the viscosity of the
barrel is not satisfied with no draws.
MTR CAL
ERR
Barrel
Occurs if a calibration initiated from the Motor Setup menu fails. This indi-
cates that the power draw of the motor is outside the allowable calibration
range.
CMP HI-
PRESS
System
This error is generated if the low side pressure is greater than 55 psi for
greater than 30 sec. Only checked when barrels are in freeze mode and
compressor is running more than two minutes.
BRL TEMP
OUT
Barrel
Indicates thermistor reading is at min. or max. value for 30 sec. without
changing.
MOTOR
STALL
Barrel
Motor stalled. A two minute defrost and two retries are allowed, then the
message is displayed,
METER FAIL
Barrel
Metering chip is nonresponsive.
BRL
RECOVER
Barrel
Barrel viscosity is too high. Motor cannot rotate. Automatic two minute
defrost to thaw barrel.
Table 5.
Error Type
Description