50 SC-CF & SC-MP Service Manual
Pump 2 or Blower Does Not Work!
If Pump 2 or blower does not work, carry out the following tests to
correct the problem:
For SC-CF or SC-MP Dual-Pump Systems only!
To increase the life of the relay, we use a "snubber" circuit on the pump relay.
With this type of circuit, if no pump is connected to an output and relays are open,
the voltmeter will continue reading around 60 volts. This is normal.
It is important to measure voltage when pump is connected to pack.
Power must remain On.
4• If "Pump 2" or "Blower" indicator
does not appear, use a spare key-
pad to verify if keypad is defective.
If it is, replace keypad.
If not, replace Spa Pack.
1• Check for an error condition on
keypad display. If there is one,
refer to specific section indicated
by the error condition.
2• Also, verify that Jumper #3 is
set properly for 2 pumps (refer
to page 10 for more info).
3• Verify if "Pump 2" or "Blower"
indicator appears on keypad
display when you press Pump 2
or Blower key.
"Pump 2"
indicator
Jumpers
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