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Troubleshooting
3A1570A 15
Troubleshooting
Before performing any troubleshooting procedures:
1. Relieve pressure, page 13.
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 con-
trols are properly set and wiring is correct before assum-
ing there is a problem.
Power
Pumps and Pressures
PROBLEM CAUSE SOLUTION
Heat zones do not operate No power Connect power cord
Turn Main Disconnect Switch ON
Power cord not connected properly Check connections
No power when disconnect switch is
turned on; using 230V, 1 phase or
230V, 3 phase power
Power terminal jumper still at 380V, 3
phase position, as shipped from fac-
tory
Place jumpers in correct position; see
Operation manual and label inside
front lower cabinet.
External main supply power circuit
breaker trips and Reactor disconnect
switch fails when switch is turned on.
Power terminal jumper was left in
230V, 1 phase position. When using
230V, 3 phase or 380V, 3 phase
power
Place jumpers in correct position; see
Operation manual. Replace main
power disconnect switch; see page
40.
No temperature display lights at
startup
No power Connect power cord
Turn Main Disconnect Switch ON
Control power fuses blown Check and replace fuses on long ter-
minal strip
PROBLEM CAUSE SOLUTION
Pump does not run up and down Motor control valve closed Open air motor shutoff valve
No air supply Air supply line not connected
Open inlet air ball valve
Air pressure regulators set at 0 psi Turn up air pressure regulators
Air motor shuttle valve is centered. Push button on top of air motor shut-
tle valve.
Pump runs but no fluid pressure Fluid inlet ball valves closed Open fluid inlet ball valves