Test Operation - York MHC-MHH Installation Manual

TEST OPERATION

CHECK THIS ITEM BEFORE START OPERATION
Outdoor
• Check the flare nut connections, valve stem cap connections and service cap connections for gas leak with a leak
detector or soap water.
Indoor
• Check the unit is firmly fixed.
• Check the connecting pipes are tighten securely.
• Check the pipe insulation.
• Check the drainage.
• Check the connection of the grounding wire.
PROTECTION MODES
Your air coditioner includes several automatic protection modes, which enables you to use it virtually at any time and
in any season, regardless of the outdoor temperature. Some of the protection modes are listed below:
Mode
Cooling
and Dry
Heating
Operation
conditions
Low outdoor
temperature
High outdoor
temperature
Low outdoor
temperature
High indoor
or outdoor
temperature
Protection
from
Indoor coil
freezing up
Outdoor coil
overheating
Outdoor coil
ice build up
Indoor coil
overheating
Controlled
remedy
Stop outdoor fan and
Compressor when
approaching freezing
conditions.
Resumes operation
automatically.
Stops compressor when
approaching over heating
conditions.
Resumes operation
automatically.
Operating indicator blinks.
Reverses operation from
heating to cooling for
short periods to de-ice
outdoor coil.
Operating indicator
blinks.
Stops outdoor fan and
compressor when
approaching high indoor
coil temperature.
Resumes operation
automatically.
13
HIGH WALL