5-102 Troubleshooting – LCD Messages
FlexFit – Linkageless Control – Revision 1.0
PREFERRED
UTILITIES MFG CORPORATION
TT
RR
OO
UU
BB
LL
EE
SS
HH
OO
OO
TT
II
NN
GG
General Alarm, Error & Warning Messages
Bad Modbus Connection
The FlexFit is not communicating properly over Modbus.
1. Verify the proper settings for "Modbus" on page 4-82 including things like duplicate addresses and communication timeout.
2. Verify proper operation of external Modbus devices on the same network.
3. Verify proper wiring to FlexFit Modbus terminals.
Bad Remote Setpoint/Remote Firing Rate
There is a problem with the remote demand signal.
1. Verify the proper setting of "P3.4.6 Remote Modulation" on page 4-74.
2. Verify proper wiring to FlexFit terminals 112 and 113.
BMS (or CC2): Invalid Software Version
The software versions of the Burner Management System (BMS) and Combustion Control (CC) are not compatible.
1. Navigate to Main Menu > Utilities > Software Versions.
2. Select the chip type next to "Chip" to view all the software versions installed.
3. Please contact Preferred Instruments.
Curve Mismatch!
CC has INVALID combustion curves
On power-up, the FlexFit noticed that the curve data has been corrupted.
1. Recycle power one time to see if that xes the problem.
2. Attempt to use the backup curve data by selecting the "Copy Backup -> FF" option.
3. Attempt to restore the data from a FlexFit Edit conguration le.
Curve Mismatch!
Copy FF -> Backup
Backup -> FF
The curve data on the FlexFit and the backup copy are out of sync.
1. You may elect to use the data on the Backup or the data on the FlexFit primary EEPROM.
Curve Mismatch!
LCD and CC have INVALID combustion curves. Toggle FD Fan Mode Input and reboot
If this message is displayed, it means there is no valid curve data stored in the CC or the LCD. This would typically only be seen
in a new controller that has never been powered on before. The FD VSD and VSD bypass curves are stored in FlexFit EEPROM
memory. Upon startup, only one of those curves is loaded into RAM (depending on the position of the FD fan mode switch). If
it is corrupt in both the CC and the LCD, it will be cleared and overwritten with all zeros. The other curves (the opposite of the
position of the FD fan mode switch) also need to be cleared, so the FD fan mode switch needs to be toggled and power cycled
to load the other curves.
1. Upon startup, the rst set of curves will be xed (VSD or VSD bypass depending on the position of the FD fan mode switch).
2. Toggle the FD fan mode input switch. If it's in VSD mode, set it to VSD bypass mode, and if it's in VSD bypass mode, set
it to VSD mode.
3. Cycle power to the FlexFit
4. Upon this startup, the second set of curves will be xed.
5. Copy the FlexFit curves to the LCD curves by selecting "Copy FF -> LCD"
6. Problem xed! If this continued to be an error, please contact Preferred Instruments.
Curve Mismatch!
LCD has INVALID combustion curves
The backup curve data has been corrupted.
1. Recycle power one time to see if that xes the problem.
2. Attempt to restore the backup curve data on the Backup by selecting the "Copy FF -> Backup" option.
Draft FeedForward Error
There is a problem with the draft feed forward option
Verify proper parameter settings for "Draft Control > Tuning" on page 4-79.
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