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TROUBLESHOOTING
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
POWER ON, PUMP ON and FAILURE
lights all off. Tap opened, no
pressure boost, pump off (Fig.10).
Power supply is on but no lights are lit.
Turn off power supply to the Mascontrol and
remove the electronic box cover. Check all
electrical connections to be certain they are
tightly fastened to the proper terminals for
the voltage needed (115V or 230V).
Refer to the schematic in the electronic box.
If all electrical connections are secure and
correct, test electrical terminals with meter
to ensure power is present at all
terminals. If power is at the terminals, the
electronic box has failed and must be
replaced (power must be on to unit to test
terminals).
POWER ON and FAILURE light on,
PUMP ON light is off. Tap opened,
no pressure boost, pump off (Fig.11)
The unit has detected one of the following:
1. Loss of suction - check water supply.
2. Blockage in pipe from water supply to
pump and Mascontrol - remove blockage.
3. If a pump has a thermal protection
switch, check to make sure the switch has
not been tripped by the pump. If pump has
been switched off due to the thermal switch,
check pump for proper operation and
condition and reset thermal switch. Press
restart button on Mascontrol. Pump should
start up.
4. The pump capacitor has failed or is not
adequate.
5. Electronic box failed - replace box (rare
occurrence).
POWER ON and FAILURE light on,
PUMP ON light is off. Tap closed,
pump off (Fig.12).
1. Pump cannot attain at least 55 psi
(incoming psi + boost) at close-off -
check pump pressure reading with pressure
gauge. Pump must be able to attain at least
55 psi to work properly with Mascontrol unit.
2. Electronic box failure - replace box (rare
occurrence).
POWER ON, PUMP ON and FAILURE
lights are all on. Tap opened, no
pressure boost, pump off (Fig.13).
The tap is open and the pump is not
operating. Check the wiring in the electronic
box to make sure all wires are securely
fastened to the proper terminals.
Also recheck voltage for correct application
(115V or 230V). Press the restart button.
If all lights remain on and the pump still
does not operate, the electronic box has
failed and should be replaced.
POWER ON, PUMP ON and FAILURE
lights are all on. Tap closed, pump
on (Fig.14).
The pump is operating and all taps are
closed, the electronic box has failed and
must be replaced.
POWER ON light on, FAILURE light
off and PUMP ON light short cycles
on and off. Tap closed, pump cycles
on and off (Fig.15).
1. Leakage less than 0.21 gpm may be
present in piping. The higher the leakage
rate (but less than 0.21 gpm) the faster the
pump cycles. Make sure all taps are closed
and all toilet valves are functioning properly.
After tap inspection check all piping and
valves connected to the system for leakage.
To help determine leak location, close the
shut-off valve after the Mascontrol. If pump
cycling stops, leak is located after the Mas-
control in the water supply. Shut off power to
Mascontrol and locate and fix leak. Restore
power to Mascontrol (Mascontrol will start
the pump automatically) and monitor system
to determine that leak has been corrected.
2. If pump cycling still occurs after closing
the shut-off valve behind Mascontrol, the
bottom check valve is obstructed from
closing properly.
POWER ON and PUMP ON light on,
FAILURE light off. All taps closed,
pump runs continuously (Fig.16).
1. The condition may be similar to
condition 1 (Fig.15) above but leak flow rate
is greater than 0.21 gpm. In this case the
leak simulates an open tap condition.
Follow instructions for condition 1,
figure 15 above.
2. The top flow valve to the Mascontrol is
obstructed.
3. The electronic box has failed and should
be replaced.
POWER ON light on, PUMP ON and
FAILURE light off. Tap open,
no flow or no pressure boost,
The column of water between Mascontrol
and the highest tap exceeds 70 feet,
therefore the column of water has created
a pressure higher than the cut-in pressure
of Mascontrol (32 psi). This prevents the
unit from working properly. Reposition
Mascontrol higher so the water column
height is less than 70 feet.
Low
PSI
Low
PSI
Low
PSI
pump off (Fig.17).
