RDZ UMHPI, Руководство пользователя

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UMHPI
Industrial inverter air/water heat pumps with axial fans
37
12 ALARMS
12.1 FLOW SWITCH [E06]
The water side flow switch is already installed inside the unit and DOES NOT HAVE to be tampered with or by-passed in any way.
The flow switch is by-passed for 10 seconds after the unit’s start up. The alarm signal occurs after 5 seconds of the error
appearance (lack of water flow, air inside the circuit, etc.). The alarm will automatically reset itself for the first two times and it will
be deactivated after 5 seconds. If the alarm happens more than 3 times per hour, it cannot automatically reset itself and so you
should manually reset the alarm.
The alarm is not active for 10 seconds from the pump start up;
12.2 ANTI-FREEZING [E05]
The alarm will be activated when the outlet water temperature sensor is less than 4°C. It turns off when the temperature becomes
higher than +7°C.
12.3 WATER SIDE HIGH TEMPERATURE [E18]
The alarm will be activated when the outlet water temperature sensor becomes higher than 65°C for at least 50 seconds. It turns
off when the water outlet temperature decreases below 62°C.
12.4 SENSORS ALARM [E61÷E69]
The alarm will be activated in the case of short or open circuit of any connected and enabled sensor.
The alarm will be activated also when the temperature becomes higher than the sensors’ upper limit of 100°C or less than the
lower limit which is -50°C.
A configured temperature sensor for DHW production mode does give any alarm if the DHW production mode is not enabled,
see table 12.13.
Temperature sensor characterization: NTC-10k Ώ a 25°C β 3435
12.5 TIMEOUT INVERTER [E801]
The time out alarm indicates that the control of the system is lost. The alarm will be activated when:
•
The controller CB of the unit does not communicate with the compressor driver board.
12.6 REMOTE ON/OFF [E00]
The E00 code will be displayed when the unit is controlled from a remote digital input.
12.7 HIGH PRESSURE [E01]
If the on board pressure transductor detects a pressure higher than 39,5 bar, the alarm will be activated.
In this case the compressor will stop immediately via software. The alarm will reset when the pressure decreases under 33,5 bar.
If the number of alarm interventions in one-hour is equal to 3 times, it will become manual reset.
12.8 HIGH PRESSURE FLOW SWITCH (IN SERIES WITH THE COMPRESSOR OUTLET SENSOR) [E64]
If the pressure switch of the machine detects a pressure higher than 41,5bar the alarm will be active.
In this case, the compressors and fan motor will be immediately electromechanically stopped and
E64 error code will be displayed.
The alarm resets when the pressure drops below 30bar. With the problem resolved, you must restart the machine with the
disconnector (wait at least 1 minute between the power off and the following power on).
12.9 LOW PRESSURE [E02]
If the on board pressure transducer detects a pressure lower than value set from the controller ( A16=5 bar by default in cooling
mode, 1.5 bar in heating mode) the alarm will be activated. In this case the compressor will stop immediately. The alarm will reset
when the pressure goes over a hysteresis of 2.0bar.
If the alarm occurs more than 3 times per hour, the alarm becomes a manual reset.
12.10 [E08] DRIVER LIMITATION
If the compressor does not reach the speed to ramp value which is expected within 30 minutes, the alarm becomes active and the
compressor will stop for safety.
If the alarm occurs more than 3 times per hour, the alarm becomes a manual reset.
12.11 [E101] MODBUS 1 CONNECTION ERROR
Standard on UMHPI V models and if present the optional kit mod. Gi,
ModBus communication connection between CB and SL1 controller is wrong. Check the wiring.