Balboa by HydroQuip heater sequence not working right

[ElementZero]

I just bought a used jacuzzi yesterday which has a Balboa by HydroQuip control. I found the instructions here and the heater instructions state:

The HydroQuip heater goes through a testing phase every time it starts up to assure that there is adequate water flow.

1) Prior to heating, the pump will run for at least 2 minutes and verify that sensors are within specifications.

2) The heater turns on for 6.5 to 18 seconds. At this point, the heat indicator on the panel is “solid”. During this time the spa side panel is not immediately responsive.

3) The heater turns off for 90 seconds, checking for adequate water flow in the heater. At this point, the heat indicator on the spa side panel may appear to “flicker” or “dim”.

4) After adequate water flow has been verified, the heat indicator on the spaside panel returns to “solid” and the spa will heat to set temperature.

Now, my jacuzzi does all of that, except for step 4 only stays on for maybe a minute after which is shuts off and the blower comes on automatically. The blower stays on for 30 secs to a minute (I haven't timed these, just a rough guess from memory) and then it shuts off and the temp comes back on. The display never gives an error code or anything.

The water never seems to heat up but I'm not sure if when the heater comes on if the water should immediately be hot coming out of the jets or if it needs time (never had a jacuzzi before). If it's the latter - since the heater is shutting off after like a minute then perhaps it doesn't have enough time to start heating up....?

Any help?

 

[kimkats]

Here is a bump to see if anyone has any ideas.