Problem Possible Cause(s) Action(s)
Display Error 1. Loose or damaged
ribbon cable
2. Damaged electronics
3. Ambient temperature
1. Visual inspection.
2. Return the meter or display for repair.
3. Operate meter between -20 to 70°C
Flow measure-
ment seems low
1. Probe not oriented
properly
2. Sensor dirty
1. Orient probe per installation sections: Insertion
(p. 25)
2. Clean sensor (p. 112)
Unit will not
power-up
1. No power input
2. Bad fuse
1. Check for correct power supply voltage at TS1
on main board.
2. Check fuse (F1) located next to TS1 on main
board.
If fuse is OK and unit still won’t power up, call Fox
Thermal for additional assistance
Meter does not read
up to full scale
Calibration table may be
corrupted
1. Check the calibration table for a corrupted location.
2. Enter the password 9111.
3. From the Flow Parameters 2 menu screen, select
CAL (F1)
4. Select NXT (F1) to cycle through calibration table
to verify entries match the calibration certicate.
5. Check for CRC error code.
Troubleshooting | 117
Model FT3
Troubleshooting
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