Troubleshooting; Troubleshooting Tips - Friedrich Uni-fit Series Installation And Operation Manual

M. TROUBLESHOOTING
M.1. Troubleshooting Tips
COMPLAINT
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Unit does not operate.
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Unit Trips Circuit Breaker
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or
Blows Fuses.
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LCDI Power Cord Trips
(Reset Button Pops Out).
NOTE:
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Unit Does Not Cool Room
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Sufficiently, or Cycles On
And Off Too Frequently.
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Unit Does Not Cool
Room Sufficiently, or
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Cycles On And Off Too
Frequently (continued).
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22
CAUSE
The unit is turned to the off position, or
the thermostat is satisfied.
The LCDI power cord is unplugged.
The LCDI power cord has tripped
(Reset button has popped out).
The circuit breaker has tripped or the
supply circuit fuse has blown.
There has been a local power failure.
Other appliances are being used on the
same circuit.
An extension cord is being used.
The circuit breaker or time-delay fuse is
not of the proper rating.
The LCDI power cord can trip (Reset
button pops out) due to disturbances
on your power supply line.
Electrical overload, overheating, or cord
pinching can trip (Reset button pops
out) the LCDI power cord.
A damaged power supply cord must be replaced with a new power supply cord obtained from the product manufacturer and
must not be repaired.
The return/ discharge air grille is
blocked.
Windows or doors to the outside are
open.
The temperature is not set at a cool
enough enough setting.
The filter is dirty or obstructed.
The indoor coil or outdoor coil is dirty or
obstructed.
There is excessive heat or moisture
(cooking, showers, etc.) in the room.
The temperature of the room you are
trying to cool is extremely hot.
The outside temperature is below 60 °F
(16 °C).
The digital control is set to fan cycling
mode.
The air conditioner has insufficient
cooling capacity to match the heat gain
of the room.
The air conditioner has insufficient
heating capacity to match the heat loss
of the room.
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Turn the unit to the on position and raise or lower temperature setting (as
appropriate) to call for operation.
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Plug into a properly grounded 3 prong receptacle. See "Electrical Rating Tables"
on Page 6 for the proper receptacle type for your unit.
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Press and release RESET (Listen for click. Reset button latches and remains
in.) to resume operation.
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Reset the circuit breaker, or replace the fuse as applicable. If the problem
continues, contact a licensed electrician.
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The unit will resume normal operation once power has been restored.
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The unit requires a dedicated outlet circuit, not shared with other appliances.
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Do NOT use an extension cord with this or any other air conditioner.
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Replace with a circuit breaker or time-delay fuse of the proper rating. See "Elec-
trical Rating Tables" on Page 6 for the proper circuit breaker/ fuse rating for your
unit. If the problem continues, contact a licensed electrician.
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Press and release RESET (Listen for click. Reset button latches and remains in.)
to resume normal operation.
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Once the problem has been determined and corrected, press and release
RESET (Listen for click. Reset button latches and remains in.) to resume
normal operation.
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Ensure that the return and/ or discharge air paths are not blocked by curtains,
blinds, furniture, etc.
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Ensure that all windows and doors are closed.
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Adjust the Temperature control to a cooler or warmer setting as necessary.
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Clean the filter, (see Routine Maintenance), or remove obstruction.
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Clean the coils, (see Routine Maintenance), or remove obstruction.
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Be sure to use exhaust vent fans while cooking or bathing and, if possible, try not
to use heat producing appliances during the hottest part of the day.
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Allow additional time for the air conditioner to cool off a very hot room.
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Do not try to operate your air conditioner in the cooling mode when the outside
temperature is below 60 °F (16 °C). The unit will not cool properly, and the unit
may be damaged.
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Since the fan does not circulate the room air continuously at this setting, the
room air does not mix as well and hot (or cold) spots may result. Using the con-
tinuous fan setting is recommended to obtain optimum comfort levels.
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Check the cooling capacity of your unit to ensure it is properly sized for the room
in which it is installed. Room air conditioners are not designed to cool multiple
rooms.
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Check the heating capacity of your unit. Air conditioners are sized to meet the cooling
load, and heater size is then selected to meet the heating load. In extreme northern
climates, room air conditioners may not be able to be used as a primary source of
heat.
SOLUTION