Hot Spot Mallorca - Not Heating

[M500sesp]

I have a "Hot Spot" Mallorca Hot tub.  It's not heating. Error _._._._._
The error seems to only comes up when I turn the jets on. 
It's not heating.
The Jets seem to be functioning correctly, no surging.
I took the filter completely out to make sure there was plenty of water flow.
Any help would be greatly appreciated.
Also does anyone know of a service manual for this model?
Thanks,
       Sam

[Hot Spring Ace]

I have a "Hot Spot" Mallorca Hot tub.  It's not heating. Error _._._._._
The error seems to only comes up when I turn the jets on. 
It's not heating.
The Jets seem to be functioning correctly, no surging.
I took the filter completely out to make sure there was plenty of water flow.
Any help would be greatly appreciated.
Also does anyone know of a service manual for this model?
Thanks,
       Sam

Based on your statements that leads me to believe its the pressure switch which is easily swapped out.

[M500sesp]

Is the pressure switch the one that is mounted, screwed into, the heater?  With the small red and black lead?
How would I go about telling if it is bad?  I am very capable with an ohm meter etc.
     Thanks,
           Sam

[Jacuzzi Jim]

  I don't know that spa but yes that sounds like the pressure switch.   You can try jumping the wires together and see what you get..

[TwinCitiesHotSpring]

  I don't know that spa but yes that sounds like the pressure switch.   You can try jumping the wires together and see what you get..

this...bypass the switch to verify if it is bad or not.  And to state the obvious DO NOT let your tub operate with a bypassed switch for an extended period of time, they are cheap anyways, probably under $20 online and easily thread in and out with a little teflon tape

[M500sesp]

Thank you for the replies.  I'll try bypassing the switch and give it a test when I get home tonight.
As a side note that part is 41.31 plus shipping from Backyardplus or 60.65 from our local dealer.  I'll probably go with the dealer since they have them in stock and are local.

Another question.  Is there water pressure behind that pressure switch?  When I unscrew it to take it out, will the water come squirting out?  Or will it just kind of dribble out?  Or should I air on the side of caution and drain the tub completely?
    Thanks,
          Sam

[TwinCitiesHotSpring]

Thank you for the replies.  I'll try bypassing the switch and give it a test when I get home tonight.
As a side note that part is 41.31 plus shipping from Backyardplus or 60.65 from our local dealer.  I'll probably go with the dealer since they have them in stock and are local.

Another question.  Is there water pressure behind that pressure switch?  When I unscrew it to take it out, will the water come squirting out?  Or will it just kind of dribble out?  Or should I air on the side of caution and drain the tub completely?
    Thanks,
          Sam

it can be replaced with the tub full...if your quick enough  but I would recommend draining it to avoid a potential mess

[Jacuzzi Jim]

Thank you for the replies.  I'll try bypassing the switch and give it a test when I get home tonight.
As a side note that part is 41.31 plus shipping from Backyardplus or 60.65 from our local dealer.  I'll probably go with the dealer since they have them in stock and are local.

Another question.  Is there water pressure behind that pressure switch?  When I unscrew it to take it out, will the water come squirting out?  Or will it just kind of dribble out?  Or should I air on the side of caution and drain the tub completely?
    Thanks,
          Sam

it can be replaced with the tub full...if your quick enough  but I would recommend draining it to avoid a potential mess

  Plus one!     I had one customer try it with the power on, the water squirted out on to the circuit board and short it out, his 50 dollar part turned into 300 for a new board as well..   Like mentioned if your quick you can do it, but draining it is easy and safer as well.