Seabreeze SHE9H4ZIGX - Protection Features; Mode Conflict (E7); Overload Protection (E8); Compressor Overload Protection (H3)

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9.2 Protection Features
9.2.1 Mode Conflict (“E7”)
If two or more indoor units are operating in different modes, an indoor unit may show this error
code if there is a mode conflict. Below are the priority levels and mode conflict for the different
modes of operation.
“compressor ON” mode > “compressor OFF” mode
“FIRST on” mode > ”NEXT on” mode
Mode
Conflict
COOL
HEAT
DRY
FAN
HEAT
COOL/DRY/FAN
9.2.2 Overload Protection (“E8”)
NOTE: The condenser coils will be in the outdoor unit when operating in “COOL” mode and in the
indoor unit when the system is operating in “HEAT” mode.
If the condenser coil temperature gets too high, the compressor should slow down and the
temperature should therefore drop. If the outdoor coils are still too hot, the compressor will
stop running and display an “E8” error code.
9.2.3 Compressor Overload Protection (“H3”)
If the discharge temperature of the compressor is too high, the compressor will shut off. After
the temperature has dropped and the compressor delay interval has passed, the compressor
will resume operation. If this occurs six times in a row before the compressor stays on for longer
than seven (7) minutes, then the system will not turn on until power has been disconnected to
the system.
9.2.4 Communication Malfunction (“E6”)
If the indoor unit does not receive a communication signal from the outdoor unit in 3 minutes,
the indoor unit will display an “E6” error code and the outdoor unit will operate as if the indoor
unit was not installed.
9.2.5 Intelligent Power Module (IPM) Protection (“H5”)
When the IPM module is overheated, the compressor will stop. During this period, the indoor
units will display the error code “H5.” After the compressor has stopped for three (3) minutes,
the system will resume operation. If this occurs six times in a row before the compressor stays
on for longer than seven (7) minutes, then the system will not turn on until power has been
disconnected to the system.
9.2.6 Compressor Overpressure (“E1”)
When the high-pressure is tripped for three (3) seconds continuously, the compressor will enter
the high-pressure protection mode and the “E1” error codes will be displayed on the indoor
units. The compressor will only resume after the power has been cut off and restored to the unit.
9.2.7 Compressor Phase Protection (“Ld”)
If one of the three phases of the compressor is open, the system will enter the compressor
phase protection mode with “Ld” displaying on the indoor units. The malfunction will be cleared
after 1 min. The unit will restart and then determine if any of the phases are still open. If this
occurs six times in a row before the compressor stays on for longer than seven (7) minutes, then
the system will not turn on until power has been disconnected to the system.