From time to time, hot tub spas need repairs to
replace worn or defective parts. Most problems have several
possible causes, hence several possible solutions.
This guide will help troubleshoot the malfunction using
a logical progression of tests and observations, to
isolate and identify the problem.
CAUTION:
Electrical repairs can be dangerous, especially around water.
We recommend that repairs be referred to a
qualified electrician or spa technician.
Regardless of who performs the work, make certain
that all electrical power to the hot tub or spa is
disconnected prior to making any inspections or
repairs. The information provided here is
for educational purposes only.
Do not perform repairs or attempt
diagnostics unless you are qualified to do so.
Useful Spa Repair & Diagnosis Tools
The basic hand tools: screwdrivers,
needle-nose pliers, wrenches, wire cutters, etc.
are needed. Effective spa system electrical troubleshooting
usually requires a multimeter for measuring
voltage and resistance (ohms). A clamp-on amp
meter is also very useful for diagnosing
many electrical problems. These meters can be
acquired at most home centers.
Symptom
Components
Associated
Cure
1
Spa does not run, no power, nothing works.
Fuse
GFCI
Input Wiring
High-limit switch
2
Spa
runs, but does not heat; insufficient heat; chattering
contactor.
Flow/Pressure Switch
Thermostat
Heater Contactor/Relay
Heater Element
Spa Side Control
Filter Cartridge
3
Excessive heat.
Thermostat
Heater Contactor/Relay
Spa Side Control
Symptom
Components Associated
Cure
4
No low speed pump; no ozonator function.
Pump Air Switch
Blower Air Switch
Time Clock
Thermostat
Contactor/Relay
Pump Motor
Ozonator
5
Continuous low speed.
Time Clock
Thermostat
Contactor/Relay
Pump Motor
6
No high speed.
Pump Air Switch
Pump Motor
Symptom
Components Associated
Cure
7
Continuous high speed; both speeds at once.
Pump Air Switch
Pump Motor
Contactor/Relay
8
No blower.
Blower Air Switch
Blower Motor
9
Continuous blower.
Blower Air Switch
Symptom
Components Associated
Cure
10
No light.
Light Air Switch
Light Transformer
Light Fuse
Lamp
11
No ozone.
Ozonator
12
GFCI keeps tripping.
GFCI
Heater Element
Symptom
Components Associated
Cure
13
Reduced water flow.
Filter Cartridge
Pump
14
High-limit trips erratically; trips at end of heat cycle.
EasyPak
Spa Controls "It's just like the name says.
Actually easier to install the new spa pack than I thought it
would be. I appreciated the expert tech support you provided
by phone, the new pack arrived promptly, and my spa is up and
running again just like new. Can't thank you enough for the
great service and fair prices too."
