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Service Manual
16
The symbol that looks like a
FLAME
is actually be a
DRIP
of water. This mode is the
DRY mode, which is used to cool the room down at the lowest possible fan speed, which
removes the most moisture from the room.
Therefore if your customer complains that his heat pump is not operating in heating, first
check that he has it in the correct mode on the remote control.
Defrost
DuctlessAire
units feature “Demand Defrost” which allows the unit to choose when to
enter into defrost, not just every 30, 60 or 90 minutes as most heat pumps
An Outdoor coil temperature sensor is located in the Outdoor unit, it MUST be connected
back to the Indoor PCB, the sensor will assist in determining if defrost is required. (Not
connecting the sensor will result in a fault code – see fault section)
During Defrost the Indoor fan motor will stop so that cold air is not blown into the room.
The Outdoor fan motor will also stop to speed up the defrost process.
After defrost has finished the compressor will stop to equalize pressures. A single blink
of the operating light shows that unit is in defrost.
Defrost Initiation and Termination
Come into the defrosting status state: (only meet one of the following conditions, the
unit will come into the defrosting status)
A After the accumulated running time of the compressor reaches thirty minutes in the
heating mode, if the temperature inspected and measured by the sensor on the outdoor coil
pipe
is below 5DegF
(programmable data 28#) in continuous one minutes and the
compressor has been continuously working for three minutes, then the system will come
into the defrosting status.
B After the accumulated running time of the compressor reaches forty minutes in the
heating mode, if the temperature inspected and measured by the sensor on the outdoor coil
Summary of Contents for DA-09
Page 1: ...Service Manual 1 Service Manual Mini Splits ...
Page 12: ...Service Manual 12 ...
Page 13: ...Service Manual 13 ...
Page 14: ...Service Manual 14 ...