Instructions
EZ Boost
TM
System
28
8.4. EZ Boost controller fault finding chart
Fault
Possible Cause
Remedy
1. No light in the front cover.
a) The ribbon cable connection is loose or
defective.
• Is the control indicator LED flashing?
If not, the EZ Boost controller is
defective.
• Check that the ribbon cable connection
is secure.
2. The pump does not start. The green
indicator light in the on/off button
is on. No alarm is indicated.
a) The EZ Boost controller, the pressure
sensor or the pump is defective.
Check :
• That the control indicator LED is
flashing. If not, the EZ Boost controller is
defective.
• That the system pressure is 7 PSI below
the pressure setting.
If so, the pump is supposed to start.
Open a tap to be sure.
If the pump starts, the system is
probably OK. The system pressure can
be read on the pressure gauge.
• Refer to fault 13 to troubleshoot the
pressure sensor. If the pump has not
started yet, proceed as follows:
Press the on/off button for 5 seconds.
If the pump starts, the EZ Boost
controller or the sensor may be
defective.
Note:
The pressure is not controlled
and may rise to a high level.
3. The pressure is not constant.
a) The pump is not of the correct type
or the pre-charge pressure of the
diaphragm tank is incorrect.
Check
• That the LED for Max. speed or Min.
speed is on. If so, this indicates that the
pump has reached a limit. See section
3, EZ Boost Quick Select Guide. Replace
the pump, if necessary.
• The pre-charge pressure of the
diaphragm tank.
Note:
Remember to stop and drain the
system pressure before the pressure is
checked.
• Make sure the diaphragm tank is the
2 gal. size.
• Whether the sensor is positioned far
away from the tap. If so, the pressure
variations may be caused by friction
losses, see section 6.4, Positioning the
Pressure Sensor.
b) No contact between BMQE pump and
EZ Boost controller.
• Check that the LED for “No contact to
pump” is on. If so, go to fault no. 14.
(continued next page)
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