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 TM5-4120-383-14
Table 3-1.
OPERATOR
TROUBLESHOOTING-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Check operation of TEMPERATURE SELECTOR switch.
Step 2.
Set control to fully WARMER then, if condition
improves, adjust properly.
Check that supply and return air louvers are
Step 3.
properly adjusted.
Adjust louvers to open position.
Check that excessive cold, outside air is not being
Step 4.
introduced through fresh air damper.
Fully close damper, then, if condition improves,
adjust properly.
Check that all doors, windows, and other openings
Step 5.
in room or enclosure are tightly closed.
Tightly close all openings.
4.
TOO MUCH HEAT.
Step 1.
See that MODE SELECTOR switch is properly set.
(When MODE SELECTOR
Set switch on LOW HEAT.
switch is set for HIGH HEAT, half of the heaters
will operate all of the time.)
Step 2.
Check operation of TEMPERATURE SELECTOR switch.
Adjust to a slightly COOLER setting.
3-4
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