10
Problem
Cause
Solution
Nothing happens when the
thermostat is turned on.
Low flow...........................................................
High limit..........................................................
Thermostat not calling for heat................
1. Check filter, skimmer basket, pump.
2. If a 2-speed pump is used, turn to high
speed.
3. Press and hold the knob for 5 seconds.
Make sure the flow rate displayed on
screen is at least 15 gpm (57 lpm).
Push the reset button.
Turn thermostat to higher temperature.
It takes a long time to heat the spa.
Low input voltage…………………...................
Undersized heater……..................................
Heat loss from poor weather
conditions (cold, high winds)………..........
Defective heating element………...............
Call the electric company.
Calculate temperature in heat rise
°/hr.= Heater input (kw) x 410 divided by spa
gallonage (This does not take into account
heat loss due to weather).
Use an spa cover.
Call an electrician.
Spa does not reach temperature.
Low flow……………………………...................... Check filter, skimmer basket, pump.
Heating element continuously
burning out.
High input voltage………………….................
Poor water chemistry...................................
Heating element split open……….............
Call the electric company.
See
"WATER CHEMISTRY" on page 3.
Over-acid condition. Watch pH, add acid
slowly.
Fuses blow or circuit breaker opens.
Shorted heating elements………................
Undersized wire……………………..................
Replace element.
Replace field wiring.
13. TROUBLESHOOTING
