OM00020 Rev 2, FP00091, FP00101 Operation Manual
Page
11
of
15
Controller Login
The user can access the hidden functionality of the system by entering the login password (default is
947).
System Errors
The RMC has a handful of faults and warnings which are displayed on the controller and will shut down
the system when triggered.
Faults
If a fault is triggered, it will shut down the system. The fault will display on the controller. The following
faults are displayed:
Table 2: RMC Faults
Code
Fault
Description
A01
PV Fault
Temperature Sensor Fault
E04
Compressor Fault
Compressor Fault
E02
Flow Fault
Low Flow Fault (< 0.6 L/min)
E01
Low Level Fault
Low Level Fault
Faults will NOT be cleared until the user manual clears the fault (see Clearing Faults, p. 11)
Clearing Faults
When a fault occurs, the user must clear the fault to resume operation of the system. To clear a fault,
the user must do the following:
Press
.
Press
2 times to reach the
Str
screen. Press
.
Press
2 times to reach
RST
. Press
.
The system will resume operation as soon as
RST
is selected.
Warnings
If a warning is triggered, no functionality of the system is disabled. The warning will be displayed n the
controller. The following warning are displayed:
Table 3: RMC Warnings
Code
Warning
Description
E03
PV Out of range
Coolant temperature is more than 5°C out of
range -- this value can be adjusted (c04)
E05
Low Level Warning
Low Level Warning
Warnings will automatically be cleared as soon as the condition initiating the warning is resolved.
Communication
The RMC is equipped with RS-485 communication. The user can connect to the Male DB9 connector at
the front of the panel and read / write information to the controller.
To use the RS485, the following pinout is used and configured as below:
