FLOWTECH flowpress Operation And Maintenance Manual page 27

Error Notification
Manual
88
system fill
is active
Alarms
Error Notification
0 Low pressure
1 Low pressure
lockout
2 System
pressure
sensor no
signal
3 System
pressure
sensor short
circuit
High pressure
4
5 System fill
timer
expired
6 Safety valve
triggered
7 Vessel pre-
charge
pressure
changed
flowpress
Problem
System is being topped up manually.
Problem
The isolation valve at the bottom of
the unit is closed.
The system pressure has fallen
below the Low pressure set point
The Low pressure set point is
too high
Continuous low pressure can
indicate a leak in the system.
The system pressure has fallen
far below the low pressure set
point and is close to 0. Possible
leakage.
The pressure sensor is not
connected.
The pressure sensor has failed.
The pressure output range is
out of detectable area. Sensor
needs calibrating.
The pressure sensor has failed.
The isolation valve at the
bottom of the unit is closed.
The system pressure has risen
above High pressure setpoint.
The expansion vessel has failed
or lost its pre-charge.
The expansion vessel is
undersized.
The high pressure set point is
too low.
System has stopped top up
because top up time has
exceeded fill time.
The system pressure has risen
above safety valve pressure.
The expansion vessel has failed
or lost its pre-charge.
Direct O&M Manual
Solution
No action needed. Warning will
disappear once the manual system fill
mode is exited.
Solution
Open the isolation valves at the
bottom of the unit.
Increase system pressure using a
filling loop, or enable the SYSTEM FILL
option.
Review the system specifications
Check system for leaks or traces of
water loss.
Activate manual fill to top up if no
leakage is detected.
Check for loose wiring on the
pressure sensor.
Replace pressure sensor
Contact Flowtech Service.
Replace pressure sensor
Open the isolation valves at the
bottom of the unit.
Decrease system pressure using a
suitable drain point.
Check the expansion vessel pre-
charge and re-charge if necessary.
Review the expansion vessel
selection
Review the system specifications.
If continuing system filling is required,
start System fill function again.
Unit will not top up until pressure has
dropped below cold fill pressure.
Check the expansion vessel pre--
charge and re-charge if necessary.
27