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Idiomas disponibles
Idiomas disponibles
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• The high-pressure switch detects the refrigerant pressure in the sealed refrigeration
system and shuts the heat pump down when unsafe operating pressures are reached. The
heat pump will automatically reset after the system pressure drops back to normal
operating pressures. When this switch is tripped, digital display will read "EE1"
• The low-pressure switch detects the refrigerant pressure in the sealed refrigeration system
to protect certain conditions that could be detrimental to compressor life. The switch shuts
the unit down when refrigerant leakage or insufficient refrigerants. The switch automatically
resets when the pressure rises to normal operating pressures. The display will show "EE2" if
this switch is tripped.
Low Ambient Temperature
If the air outside the heat pump is not warm enough to generate heat, the system will shut
down. The actual shutdown temperature point of your unit will vary subject to current
weather conditions and the amount of sunlight reaching the heat pump due to low
temperature. The shutdown can occur anywhere within a wide range of temperatures,
usually below 0 degree. A shutdown occurs when the air temperature sensor detects the
ambient temperature is lower than 0 degree (digital controller will display a code "PP7").
The unit will start up again when the temperature raises enough to reset this switch.
Time Delay
All models use a 3-minute time delay to prevent repeated tripping of the compressor
thermal overload, which is caused by attempting startup before system pressures are
equalized. Any interruptions, except of power loss, will result in a 3-minute time delay.
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