Graco Therm-O-Flow 55-H, Instructions-Parts List Manual

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33 310–534
Electrical Control Panel Troubleshooting
For more information about the electrical control panel, see the electrical control panel’s documentation.
Problem Cause(s) Solution(s)
Disconnect is ON, but no indica-
tor lights are lit The ground fault interrupt has been
activated. Reset the ground fault interrupt.
See procedure on page 27.
g
One or more fuses has (have) been
blown. Replace the blown fuse(s).
High Temperature Alarm lights The temperature of a heated compo-
nent has gone out of range. Supply unit automatically turns off
power to supply unit components.
Unit turns power back on when
overheated components reach ap-
propriate temperatures.
Heat is turned off after a period of
pump inactivity Pump has not moved within the pro-
grammed time period and the inactivity
timer has been triggered. See procedure on page 27.
High Temperature Alarm indicator
is lit before the unit has heated up One or more temperature controllers
has different dip switch settings. Set the dip switches on all tempera-
ture controllers to the same set-
tings. See Fig. 5 page 15.
One or more temperature controllers
correspond to zones that are not in use. Disable unused temperature con-
troller(s). See procedure on
page 16.