Page 24
POOL PRODUCTS
8.
If a time clock is installed, is there power to the
timer? Is the timer motor working? There is
usually a visual motor check opening on the timer
mechanism. Is the switch located below the timer
dial ON?
9.
Are there any loose wires or terminals?
10. Is the pool filter clean, and is the pump operating
properly?
9.2.3 Troubleshooting
NOTE:
These troubleshooting procedures
require connections to electrical terminals and jumper
wires to check operation. To avoid electrical shock,
turn off electric power before servicing line voltage
controls. Never leave a jumper wire in place to fix a
heater. This would bypass safety and operating
controls. See Figure 21 for burner parts identification.
9.2.3.1
Burner will not start (motor and
transformer do not come on)
1.
Is there power to the heater? Have you checked
the reset buttons on the motor and primary
control?
2.
Place a jumper wire across the two terminals on
the cad cell. If the burner starts, the problem is in
the heater control circuit. This circuit consists of
the pressure switch, high limit control, safety
switch, thermostat, time clock switch (if one is
installed) or the wire harness. Check the wire
harness for any loose wires or worn insulation.
Then jumper each control until the problem is
located.
3.
Press the reset button on the primary control. If
the unit does not start, go to step 5. If the unit
starts, turn off the power and check the following
items that can lock out the primary control:
a.
Dirty or defective cad cell.
b.
Defective primary control.
c.
Oil level in tank too low or water in the
tank.
d.
Poor combustion caused by:
Fouled nozzle
Fuel line air leaks
Improper nozzle pressure (pressure
should be 100 psi)
Improper air setting (see Section
9.2.3.4)
4.
Press the reset button on the motor. If the unit
does not start, go to step 5. If the unit starts, shut
off power and check the blower wheel and
flexible coupling between the motor and the fuel
pump. Make sure the blower wheel and fuel unit
are not binding. Make sure the return fuel line is
not restricted.
5.
Remove one cad cell wire from the primary
control. If the burner starts, replace the cad cell.
6.
Turn off electric power to the heater. Short out
the high limit switch, in the high voltage circuit. If
the burner starts when power is restored, the
switch is faulty.
7.
Turn off electric power and inspect the wiring
below the primary control and the ignition
transformer. Make sure there are no loose
connections.
8.
If the wiring is okay, and the blower wheel
rotates freely, replace the primary control.
9.2.3.2
Burner Tries to Start, but the
Primary Control Shuts Off
(either motor or transformer or
both come on)
1.
Is the burner motor turning? If yes, go to next
step.
2.
Press the reset buttons on the motor and primary
control. If the motor does not start, but
transformer is providing spark at the electrodes,
go to step 3.
3.
Lift the ignition transformer and make sure the
motor rotates freely. If it does not rotate freely,
replace the motor. If the motor is internally
binding, replace the motor.
4.
Open the inspection port and use a mirror to
check combustion. If there is no ignition before
the primary control shuts the burner down, go to
step 6. If the burner does ignite with a good
flame, go to step 5. If the burner tries to ignite,
but the flame is intermittent, go to step 8.
5.
Check the cad cell and primary control.
Figure 21. Cad Cell and Primary Control.
Содержание DP3000
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