TROUBLESHOOTING
12.
Inspect coils. Use
fi
n comb to straighten out any
damaged
fi
ns. Coils must be clean for proper
operation.
Do not
use solvent-based cleaner to clean coils,
some solvents produce noxious odor when unit is in
operation.
13.
Inspect and clean drain pan and drain line(s). Use of
anti-fungicide tablet to keep condensate system free
from bacterial contaminants is recommended.
14.
Verify unit is level. Over time building and equipment
may settle, causing shift in direction of condensate
fl
ow.
15.
Replace access panels and reconnect electrical power.
16.
Test unit operation.
MAINTENANCE
Troubleshooting -
Have quali
fi
ed technician conduct troubleshooting procedures.
Symptom
Suggestion
No heat or cooling
• Verify unit has power and thermostat is satis
fi
ed. If thermostat is not
satis
fi
ed, call your installing contractor or service contractor.
Thermostat calls for cooling, cool air is
not
coming from unit.
• Check for continuity between thermostat and unit. Verify 24 Vac is
present across terminals
C
and
R
.
• Verify water is
fl
owing through water coil. Locate high pressure switch
reset button, push the button.
• Some units are equipped with
LCDI
(Leakage Current Detection
Interrupt) line cord. Verify line cord is reset by pressing reset button at
line cord plug.
• Note:
If indoor fan is operational and all above suggested procedures
have been followed, and there is still no cooling being supplied by unit,
contact trained heating and cooling professional.
Thermostat calls for heat,
no heat
comes
from unit.
• Check to see if unit has power or thermostat has been satis
fi
ed. If
unit has power and thermostat is satis
fi
ed, set thermostat above room
temperature.
• Units equipped with electric heaters have temperature limit switch to
prevent electric heater from reaching unsafe temperatures. If after
calling for heating heater is not energized, check for continuity across
limit. If limit is open, replace with equivalent limit switch. Auto reset /
Manual reset Switch.
Thermostat calls for heat while in heat
pump mode, but
no heated air
comes
from unit.
• If unit is equipped with LCDI Line Cord, verify it is not tripped.
• While in heat pump mode, verify thermostat is not energizing
O
terminal.
RetroAire units are designed to work in heat pump mode when 24Vac is
present across
Y
and
C
.
• Verify unit has power or thermostat has been satis
fi
ed. If unit has power
and thermostat is satis
fi
ed, set thermostat above room temperature.
The Right Fit for Comfort
20
Made in USA
