Marvair SP-SC Air.pdf - Marlow-Hunter, LLC

SeaMach Reverse Cycle Air Conditioners
Dehumidification Screen
Defrost Screen
Defrost - Under certain conditions in the cooling mode, ice may form on the indoor coil. A dirty filter or
restricted air flow can cause ice to form on the coil. To prevent excessive ice formation, the fan will
continue to run, but the compressor will automatically turn off until the temperature of the coil rises to
the factory set temperature. When this temperature is reached, the SeaMach unit will automatically
resume normal operation.
Alarms
In addition to controlling the temperature, the MachAir OLED controller also monitors the operation
of the SeaMach unit and will display fault conditions. If a problem is detected, a message will be
displayed on the screen. Once an alarm has been detected, it is necessary to turn power off to the
SeaMach unit at the breaker and then restore power to the unit to clear the alarm.
Low Voltage - The display will show Low Voltage if low voltage is detected for 10 seconds. For 115
volt units, the low voltage threshold is 93 volts; for 230 volts the threshold is 185 volts. These limits are
factory set and cannot be changed.
Sensor INT - The display will show SENSOR INT when the built–in sensor in the MachAir OLED
display is defective. If this display persists, contact Marvair or your local SeaMach service center.
Sensor OPT - The display will show SENSOR OPT (optional) when the remote sensor is defective or if
the remote sensor was selected in the Air Sensor set up, but a remote sensor is not connected. If this
display persists, contact Marvair or your local SeaMach service center.
SeaMach Owner’s Manual 5/05 Page 10 of 24