Troubleshooting
18 312063Z
Hose Heat System
Before performing any troubleshooting procedures:
1. Relieve the pressure. See Pressure Relief
Procedure, page 26.
2. Turn main power OFF .
3. Allow equipment to cool.
Problems
Try the recommended solutions in the order given for
each problem, to avoid unnecessary repairs. Also,
determine that all circuit breakers, switches, and
controls are properly set and wiring is correct before
assuming there is a problem.
PROBLEM CAUSE SOLUTION
Hose heats but heats slower than usual
or it does not reach temperature.
Ambient temperature is too cold. Use auxiliary hose heat system.
FTS failed or not installed correctly. Check FTS, E04: Fluid Temperature
Sensor (FTS) or thermocouple
disconnected, page 10.
Low supply voltage. Verify line voltage. Low line voltage
significantly reduces power available to
hose heat system, affecting longer
hose lengths.
Hose does not maintain temperature
while spraying.
A and B setpoints too low. Increase A and B setpoints. Hose is
designed to maintain temperature, not
to increase it.
Ambient temperature is too cold. Increase A and B setpoints to increase
fluid temperature and keep it steady.
Flow too high. Use smaller mix chamber. Decrease
pressure.
Hose was not fully preheated. Wait for hose to heat to correct
temperature before spraying.
Low supply voltage. Verify line voltage. Low line voltage
significantly reduces power available to
hose heat system, affecting longer
hose lengths.
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