Basic control system troubleshooting (cont.) – Balboa Water Group BP 50Hz User Manual

Page 14

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Manufactured under one or more of these patents. U.S. Patents: 5332944, 5361215, 5550753, 5559720, 5,883,459, 6253227, 6282370, 6590188, 6976052, 6965815, 7030343, 7,417, 834 b2,

Canadian Patent: 2342614, Australian patent: 2373248 other patents both foreign and domestic applied for and pending. All material copyright of Balboa Water Group.

5/02/13

THESE READINGS SHOULD BE TAKEN UNDER
PEAK LOAD CONDITIONS.

IMPORTANT
If the voltage is not in the acceptable range, call

an electrician or the local electric company to diagnose
the problem.

TO DETERMINE THE CAUSE OF A BLOWN POWER INPUT
FUSE

Perform the following sequence of tests.

Test the System

Turn the power off.

Be sure to replace the system power input fuse with the

same type.
Unplug the blower and all pumps.

Restore the power and verify system operation.

If the fuse blows, then re-check the internal system wires

and connector for burns, cracks or cuts in insulation.
If the fuse does not blow, turn the power off and plug in the

pump.

NOTE: Be sure to test each device individually.

Test the Pump

Restore the power and activate the pump.

If the fuse blows, there is a pump problem.

If the fuse does not blow, turn off the power.

Test the Blower

Plug in the blower.

Power up the system and activate the blower.

If the fuse blows, then there is a blower problem.

If the fuse does not blow, the combined pump and blower

amperage may be excessive. To verify this, first check
with your spa manufacturer for amperage draw limits on
each device.
Since the blower should now be running, you can check

the amperage draw with an ammeter by measuring around
the black blower wire and compare with manufacturer’s
specifications.

Basic Control System Troubleshooting (cont.)

TEST THE AMPERAGE DRAW

Turn off the power, disconnect the
blower, make sure the pump is
plugged in, and restore power.

Start the pump and switch to

high speed (if available), this
should draw the most current.
Make sure all jets and valves

are open.
Check the amperage at the

red pump wire. Compare your
reading with manufacturer specifications. (If the other plug-
in devices exist, they should be tested in the same way.)
If the amperage draw for each device is within

manufacturer’s specifications, the problem could be a
nuisance spike in the pump, or water in the blower.

NOTE: These slow-blow fuses are not always discolored when
blown. Always test continuity of a fuse with an ohmmeter.

NOTE: Miswiring of the spa is the most common reason for this
fuse to blow. However, a lightning strike in the area is a possible,
though less likely, cause of the failure.

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