MARIMEX PREMIUM 5000, Руководство пользователя

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4.2.4 Keypad locking
The keypad can be locked to prevent accidental interference with the unit's
settings in the home screen, press and hold for 5 seconds the button . When the
tone sounds, the keypad is locked. Follow the same procedure to unlock a locked
keypad.
Note: If the device reports an error, the keypad is automatically unlocked.
5. AUTOMATIC PROTECTION AND CONTROL SYSTEMS
5.1 Water flow sensor:
The water flow sensor closes when water flows through the heat pump exchanger
and switches off the heat pump when the water flow stops or falls below the mini-
mum required level.
5.2 Protection at high and low refrigerant gas pressure
The high-pressure sensor protects the heat pump from damage if the gas overpre-
ssure is exceeded. The low-pressure sensor at compressor suction section sends
a signal when refrigerant has leaked from the circuit and the unit cannot be started.