Manual

- 19 -
TABLE VI. Troubleshooting Guide
MESSAGE CODE
Description/Symptom
PROBABLE CAUSE
ACTION
MSG-0
Communications not
being received from
probe(s)
1. Improper cable hookup
2. Blown main fuse
3. Failed RS-485 circuit
4. Damaged flow sensor
1. Verify plug-in connector properly mated
2. Check all cable connections
3. Check F1 fuse on probe board
4. Contact factory
MSG-1
Invalid data received
from probe(s)
1. Failed RS-485 communications
component
1. Check wiring
2. Contact factory
MSG-2
Flow sensor heater
“OFF”
1. Blown heater fuse
2. Failed electronic component
1. Contact factory
MSG-3
Relative saturation
sensor power “OFF”'
1. Probe temperature too high
1. Check to be sure probe temperature is
<160°F
2. Contact factory
MSG-4
RS heater “FF”
1. Component failure 1. Contact factory
MSG-5
Pressure sensor heater
“FF”
1. Problem with pressure port
circuitry
1. Contact factory
MSG-6
Temperature alarm
(above 210°F/99°C)
1. Steam in exhaust pipe
1. Remove probe or cool line ASAP!
Once line has cooled down and probe is
reinstalled, check unit for proper function
MSG-7
Wet probe
1. This usually indicates a condenser
design or operation problem that
requires corrective action
2. Hogging mode during start-up
1. Contact factory
MSG-8
RS sensor problem
1. RS sensor has failed 2. Contact factory
Mass flow output
saturates high, will not
respond to flow changes
1. Flow rate is not within range of
calibration
2. Blown heater fuse
3. Failed electronic component
1. Contact factory about re-ranging
instrument
2. Replace fuse
3. Contact factory
Mass flow output
saturates low, will not
respond to flow changes
1. Flow rate is not within range of
calibration
2. Failed electronic component
1. Contact factory about re-ranging
instrument
2. Contact factory
When using the RheoVac software on a PC, the software may give you a “Communication Error or
Message.” Use the Table VII to determine the source of this message and appropriate action.
Note: If the RheoVac instrument is operating without message indications but output readings are
questionable, please send to Intek by telefax or e-mail the following plant data
: turbine back pressure,
hot well temperature, load, and inlet and outlet circulation water temperatures, along with at least 24
hours of data from the RheoVac instrument/probe for the same time period.