Aquastarman

I have had a couple of bad load boards recently for the IQ2020. They work fine initially then the red an green LEDs flash on the load board. In some cases the situation will reset if powered down in other it would not reset. Bad boards? or something else causing the load board to lock up? Steve

Send a photo of the topside control panel

If you control system was made between 2009 and 2012 you have Chinese controls. hot springs has abandoned these controls in favor of their new Eagle system. You may be forced to upgrade

The serial number comes back as an 02 sauverign 355 gallons 115 or 220 volt operation

A spa running in 220volts heats 5 times faster than the identical spa running on 115volts the heater stays on when the jets are running. The operating cost on 220 is usually lower especially if the jet pumps are 220

I have seen this problem. If I recall the temp sensor made for some Sweetwater's were specific to Sweetwater even though they looked identical to LX10 and LX15 sensors made by Spa Builders inc. If there has been any replacement of the sensors this might be why. Also check how the sensor is reading the water temp. In some temp wells the sensor can slide back away from the water it is there to moniter. this gap might explain the 3 degree difference

Bleeders are provided to help the pump prime itself after a water change. Pumps with the output (discharge) facing side ways traps air in the pump housing. The bleeders take this air out or at least they are supposed to

Is there voltage at the heater terminals? If not look for a burnt spot on the back of the mother board.if it were a sensor or a pressure switch there would be codes in the display. Also check your input voltage. If this is a 220 volt spa the pump could be 115volt and appear to work fine. However the heater would need 220volts to work properly

The software in the motherboard and the software in the control head are not the same anymore you may have to replace the topside control as well. Loosing your button assignments are common with board changes

F2 through F8 refers to the number of hours in a 12 hour time frame that the filter pump is running set this to F2. The filter pumps running during the hot time of day can easily over heat the water in a sealed spa cabinet. Set your beginning times to early morning.this will repeat 12hours later in the early read cool time of the afternoon

There was a lot of experimentation in the late 80's and 90's this looks like one of those.don't waste your time trying to figure it out it may have been buggy to begin with

You will have to make the tool to take these jet faces off. The holes in the face of the jet accepts this tool. The jet looks like an old Hydroair Microsage jet

Could be the gfi itself. Most likely offender would be the heater next the circ pump 3rd the breaker.

Before you Replace the heater test the continuity with a digital VOM you should read 11 Ohms for the 5.5Kw heater and around 16 ohms for the 4Kw heater. Hotspring problems are extremely difficult because the system does not offer trouble codes or even blink codes for that matter