Riello NXHM - Field Settings

102
ENGLISH
1. Faults with external interference sources
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Faults Causes Remedy
Pump is not running although the power
supply is switched on. Black display
Electrical fuse defective Check fuses
Pump has no voltage Restore power after interruption
Pump is making noises &DYLWDWLRQGXHWRLQVXႈFLHQWVXFWLRQSUHVVXUH
Increase the system suction pressure within the
permissible range
Check the delivery head setting and set to lower
head if necessary
2. Fault signals
 The fault signal is indicated by the LED display .
 The fault signal LED is continuously illuminated in red .
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i
INFORMATION
 EXCEPTION: Error code E10 (blocking)
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Code Fault Cause Remedy
E04 Mains undervoltage Power supply too low on mains side Check mains voltage.
E05 Mains overvoltage
Power supply too high on mains side Check mains voltage.
E09 Turbine operation
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through the pump from the pressure to the
suction side)
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sary
E10 Blocking The rotor is blocked Request customer service
E21* Overload Sluggish motor Request customer service
E23 Short-circuit Motor current too high Request customer service
E25 &RQWDFWLQJZLQGLQJ Motor winding defective Request customer service
E30 Module overheated Module interior too warm
Improve room ventilation, check operating con-
ditions, request customer service, if necessary
E31 Overheated power section Ambient temperature too high
Improve room ventilation, check operating con-
ditions, request customer service, if necessary
E36 Electronic faults Ambient temperature too high Request customer service
* In addition to the LED display, the fault signal LED is continuously illuminated in red
3. Warning signals
 The warning signal is indicated by the LED display.
 The fault signal LED and the SSM relay do not respond.
 The pump continues to run with limited output.
 The indicated faulty operating status must not occur for a prolonged period. The cause must be eliminated.
Code Fault Cause Remedy
E07 Generator operation
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them
Check the system
E11
Dry running Air in the pump &KHFNWKHZDWHUYROXPHSUHVVXUH
E21* Overload
Sluggish motor, pump is oper- ated outside of
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ture). The speed is lower than during normal
operation.
Check the ambient conditions
* See also fault signal E21
NOTE
 If the operating fault cannot be remedied, please consult a specialist technician or the nearest customer service location or represen-
tative.
 In order to ensure the service life of the pump, it is recommended that the unit run at least once every 2 weeks (ensure that the pump is
running) or keep it powered on for a long time (in the power-on standby state, the unit will run the pump for 1 minutes every 24 hours).
10.5 Field settings
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settings are available. These settings are accessible and programmable through “FOR SERVICEMAN” in user interface.
Powering on the unit
When power on the unit, "1%~99%" is displayed on the user interface during initialization. During this process the user interface cannot be
operated.
Procedure
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NOTE
Temperature valves displayed on the wired controller (user interface) are in °C.