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Troubleshooting Operations
Pump/Blower Not Operating
cont.
3.
Replace the spa pack.
a. If the topside button is illuminating, the fuse is good, the spa has the proper voltage, but the pump
plug port is providing incorrect or no voltage to the pump, or if the spa pack is providing voltage to both high
and low speed at the same time, replace the spa pack.
Spa failing to heat
1.
Any codes?
a. On the display of the spa there may be codes that may indicate as to why the spa is failing to heat
such as (hh, oh, ic, sa, sb, sn, hl, lf, dr, dy, ec, sl, ohh, ohs, sna, snb, sns, hfl, dry, ice, ecn, slp, se).
b. Hh, oh, hl, lf, dr, dy, ohh, ohs, hfl, dry are flow codes indicating that there is an inadequate amount
of water flow through the heater tube. See flow issues.
c. Ic, ice are potential ice condition codes. This indicates that the temperature of the water is
approaching freezing conditions. This will not allow the heater to turn on until the temperature of
the spa exceeds 45 degrees. Add warm water to the filter area until temperature of spa increases
above 45 degrees or until heater engages.
d. Sa, sb, sn, sna, snb, sns are sensor codes indicating that there is an issue with one or both sensors.
Sa and sna indicate sensor a is having an issue. Sb and snb indicate sensor b is having an issue. Sn and
sns indicate the sensors are out of balance. Swap where the sensors plug into the circuit board. If
the code changes the issue is with the individual sensor. If the same code persists, replace pack.
e. Ec, sl, ecn, slp, se are indicating the mode the spa is in. If the spa is not in standard mode it may not
maintain the desired temperature. Change the heating mode to standard mode.
2.
Is the spa calling for heat?
a. On the topside control there is an led by the warm,
cool or temperature button. If this light is on, the
spa is calling for heat. If it is not, the spa is not trying
to heat.
3.
Check voltage to spa.
a. Check to make sure spa has the proper voltage at the terminal block within the spa pack.
4.
Test voltage to the heater.
a.
Test the voltage being provided to the heater by testing between the two copper straps connecting
the heater to the circuit board. The heater should have the exact same voltage the spa is receiving.
5.
Replace heater/pack.
a. If there are no codes on the display, the spa is set to standard mode, the heater led light is
illuminated, the spa pack is receiving the proper voltage, but the heater is not, replace the pack.
b. If the heater is receiving the proper voltage, replace the heater.
