My hot tub has no power and nothing is working! Help!!
|April 29, 2011||Posted by h20articles under Hot Tub Maintenance|
1. Check the incoming power for proper voltage: 110 or 220vac, then check circuit breaker. The power must check correctly before continuing.
2. Test and reset the GFCI. If the GFCI does not stay set, it is faulty and the wiring is shorted. If the GFCI does remain set,reconnect each load until the GFCI trips again. Last load connected will be the problem.
3. If GFCI tests and resets, check the fuse.- If fuse blows again, disconnect all in step 2. If fuse continues to blow there is probably is an internal wiring problem. If fuse remains does not blow, reconnect each load one at a time until failure reoccurs as in step 2. Remember to turn each device on before proceeding to next load device. Last unit connected before fuse fails must be the cause.
4. If steps 1 to 3 are good but the unit still will not power up, check the voltage at the high limit contactor (line side contact voltage, coil voltage, load side contact voltage). If line side contact voltage is bad, check input terminal block connections (check also for proper jumper placement on newly-installed convertible voltage control systems, if unit is running 110v). If coil voltage is bad, check that high limit switch is set. Reset if tripped. If problem reoccurs, check flow-through heater manifold. (make sure heater element is not touching the sides of the manifold. If it is, move element away from manifold with long screwdriver. Make sure power is disconnected). Inspect valves to make sure they are fully open, inspect filter element (run unit without filter if possible to see if symptoms change). If previous checks show good, replace high limit. If both line side contact voltage and coil voltage check good, but load side contact voltage is bad, replace high limit contactor.
E) If Steps 1 to 4 check good, internal control system wiring or circuit board is at fault. Repair or replace.