Troubleshooting
309813B
15
Hose display reads 0A on startup.
FTS not installed and
zone off.
Install FTS (see operation manual),
or adjust current to desired setting.
Erratic display; display turns on and
off.
Cable not grounded.
Ground cable, page 32.
Extension cable too long.
Must not exceed 100 ft (30.5 m).
Display buttons do not work properly;
cannot get out of an operation.
Broken membrane switch.
Replace, page 32.
Ribbon cable disconnected or bro-
ken.
Connect cable, or replace.
Red stop button does not work.
Broken button (fused contact).
Replace, page 32.
Loose wire.
Check connections, page 32.
No heat in any zone.
Red stop button circuit open.
Check button connections. See page
32 and electrical diagrams.
No heat in A or B zones.
Circuit breaker(s) tripped.
Reset breaker CB3 or CB4, page 18.
Heat turned off.
Press
or
zone
keys.
Temperature control alarm.
Check temperature displays for diag-
nostic code, page 12.
Defective heater.
Replace, page 22. Check resistance.
Loose connectors or wire nuts.
Check connections.
Failed temperature control board.
Open cabinet. Check if board LED is
blinking. If not, check power wiring
connections to ensure board has
power. If board has power and LED is
not blinking, replace board, page 20.
Low heat in A or B zones.
A and B temperature setpoints too
low.
Check setpoint. Increase if neces-
sary.
Flow too high.
Use smaller mix chamber. Decrease
pressure.
Defective heater.
Replace, page 22. Check resistance.
Loose connectors or wire nuts.
Check connections.
Low voltage.
Check that power supply meets
requirements.
Overheated temperature control
board.
Check fan operation.
Check if door is open; close.
Check that cooling holes are not
clogged or obstructed.
Fluid too cold.
Preheat fluid.
PROBLEM
CAUSE
SOLUTION
A
B
