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.
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 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 4.
Over-acid condition. Watch pH, add
acid slowly.
Fuses blow or circuit breaker opens
Shorted heating elements………................
Undersized wire……………………..................
Replace element.
Replace field wiring.
11. TROUBLESHOOTING
