Viper Low overrun Service Manual
© 2016, Cornelius Inc
- 15 -
Publication Number: 621360241LOEWSE
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.
Figure 11. Error Status Screen
Limp
A Limp error is an error that doesn’t prevent the unit from operating, but lim-
its 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 BARREL
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 func-
tionality.
TCO OPEN
System
TCO (Temperature Cut Off) has occurred on the
refrigeration outlet of a barrel 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 min-
utes 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 indicates that the power
draw of the motor is outside the allowable calibra-
tion 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.
Table 5.
Error Type
Description
ERROR
STATUS
12:51P
MAR 04
#1 MOTOR PWR
COMP HIGH
BACK
