23
POSSIBLE CAUSE
VERIFICATION
SOLUTION
Incorrect Low Voltage Connections
Check low voltage connections
Correct low voltage connections.
against wiring diagram.
Loose Low Voltage Connections
Check all wiring connections for
Tighten all loose connections.
tightness.
Defective Blower Motor
Check motor as described on page
If defective, replace motor.
25 in this manual.
CONDITION: ESP-G UNIT WILL NOT START, BUT CONDENSING UNIT CYCLES
POSSIBLE CAUSE
VERIFICATION
SOLUTION
Blower Motor
Check motor as described on page 25
If defective, replace motor.
in this manual.
Check motor amps and compare to
If excessive, motor may be
nameplate ratings.
overloaded. Check supply duct for
breaks or leaks.
CONDITION: ESP-G UNIT CYCLES, BUT CONDENSING UNIT RUNS
POSSIBLE CAUSE
VERIFICATION
SOLUTION
Flash Code - 2 Flashes
With volt meter, check for 24v at
If no voltage, check coil for ice.
(Anti-Frost Switch)
terminal “AFS”.
If ice is present, check air filter,
return air duct & blower motor for
air flow.
If no ice on coil, check anti-frost
switch for continuity. If no continuity,
replace switch.
If 24v, switches are O.K.
Thermostat in Wrong Location
Check that thermostat is in vicinity of
If necessary, relocate thermostat.
return air box.
Loose Low Or High Voltage Wiring
Check all wiring connections for
Tighten all loose connections.
tightness.
Defective Blower Motor
Check motor as described on page 25
If defective, replace motor.
in this manual.
Condensing Unit
Check according to manufacturer’s
Repair or replace as directed by
instructions.
manufacturer.
CONDITION: ESP-G UNIT RUNS, BUT CONDENSING UNIT CYCLES
Summary of Contents for ESP-G SYSTEM
Page 10: ...10 FIGURE 2 9 FIGURE 2 8...
Page 13: ...FIGURE 2 13 WIRING DIAGRAM 13...