Unit charges improperly.
UNIT
CHARGES
UNEVENLY
Check unit amperage.
Check heating elements (54) and charge
control sequencer (49) for proper operation.
Check fans (53) and dampers for
smooth operation.
DEFECTIVE
Repair fan/damper system.
UNIT
UNDERCHARGES
LESS THAN
RATED
AMPERAGE
OK
RATED
AMPERAGE
Check voltage between A1 and A2
terminal block positions (24).
Check for line voltage between L2
and T2 terminal block positions
(24), or observe service light for
illumination.
VOLTAGE
PRESENT
Troubleshoot and repair load man-
agement control, automatic charge
control system or field wiring.
Replace charge
control thermostat (45).
NO
VOLTAGE
PRESENT
NO
VOLTAGE
PRESENT
(Service light off.)
VOLTAGE
PRESENT
(Service
light on.)
UNIT
OVERCHARGES
(With manual
Charge Control.)
Replace core
charging high
limit switch
(33).
Check unit wiring. If correct,
replace charge control
thermostat (45).
Model: S Series Only
Function: Core Charging
Problem: Improper Charging
Before starting any procedures listed below, check room thermostat and circuit breaker settings.
Note: For cross reference to number coded components, see figure 7.
To Next Page
Loading...
