Electrical Control Panel Troubleshooting - Graco Therm-O-Flow 20 EasyKey NXT 2200 Instructions-Parts List Manual

Electrical Control Panel Troubleshooting

Electrical Control Panel Troubleshooting
Problem
Disconnect is ON, but EasyKey not
lit.
High temperature alarm.
Heat is turned off after a period of
pump inactivity.
Pump Ready key does not clear
flashing pump ready icon.
40
Cause
The ground fault interrupt has been
activated.
One or more fuses or circuit breakers
tripped.
The temperature of a heated compo-
nent has gone out of range.
Pump has not moved within the pro-
grammed time period and the inactiv-
ity timer has been triggered.
Unloader not in Heat On state and/or
zones have not reached warning
deviation level.
Solution
Have a qualified electrician check
wiring.
Have a qualified electrician check
wiring.
Supply unit automatically turns off
power to supply unit components and
air motor. Unit turns power back on
when overheated components reach
appropriate temperatures.
See Table 7, page 23.
Turn system to Heat On state and
wait until all zones reach warning
deviation level.
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