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18
308219
Troubleshooting
Heater
Problem
Cause
Solution
Heater Control indicator lamp stays
on
Flow rate too high to maintain set
temperature
Decrease flow rate; using smaller orifice nozzle
reduces flow rate.
Release gun trigger; lights should go off in a
few seconds.
Maximum flow rates are:
Foam-Cat
r
200: 15 lb/min (6.8 kg/min)
Foam-Cat
r
400: 30 lb/min (13.5 kg/min)
Faulty Sensor Probe (256)
Check the following for both sides of heater:
1. Probe connector is aligned properly into all
3 male pins of circuit board.
2. Probe protrudes 1.44” (36 mm) from
manifold. See Fig. 16, page 27.
3. Check resistance. See page 20.
P1 connector unplugged;
see
drawing to the left
Plug in.
Check resistance. See page 20.
Faulty Triac
Check triac wiring. See Fig. 12, page 24.
Check resistance. See page 24.
The ATC, if used, is not plugged in
Be sure ATC connector, if used, is properly
plugged into circuit board.
Check resistance. See page 22.
Circuit board out of calibration
See page 32. Calibration procedure is included
in replacement procedure.
Sensor Probe (256) not plugged in
Plug in. See page 27.
Heater Control indicator lamp
stays off – no heat.
Thermostat(s) (252) open (normally
closed)
Reset thermostat by pushing reset button. See
Fig. 14, page 26.
Triac wires not connected properly
Check triac detail. See Fig. 13, page 25.
TEMP SET dial wires not connected
Check wiring. See Fig. 10, page 21.
Faulty circuit board
Replace. See page 30.
AC power wiring or voltage problem
Check for 200–240 VRMs. See
Adjust the
Heater
, Step 1, page 16.
Elements burned out or not
plugged in
Check element resistance. See page 22.
Summary of Contents for FOAM-CAT 200 Series
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