Noel D Posted September 11 Report Share Posted September 11 I am having an issue with our Printer QSS 3801. Error is saying The processing solution temperature is above the safety range 43.0 C°BF The solution (P2) is set to 40.0 C° Hoping for guidance and help please thanks. Quote Link to comment Share on other sites More sharing options...
Dave S Posted September 11 Report Share Posted September 11 Check the chemical filter is not blocked. With the filter pot removed, check if you can see the chemistry swirling, if you can't it will mean the pump is blocked. Quote Link to comment Share on other sites More sharing options...
davidlam Posted September 11 Report Share Posted September 11 Agree... Check filter, pump, (processor relay pcb SSRxx fails) and rarely failure with processor control pcb... can apply to most QSS- IF P2 temp climbs slowly up to 43 after 40 reached..., then I would guess that SSR is half-wave short circuit thus continues to provide 110Vac (instead of 220Vac) to chemical heater instead of turn off heater Good luck Quote Link to comment Share on other sites More sharing options...
Noel D Posted September 12 Author Report Share Posted September 12 Thanks Guys! Much appreciated! I'll apply your instructions.. Quote Link to comment Share on other sites More sharing options...
Noel D Posted September 13 Author Report Share Posted September 13 @Dave S, I checked the circulation pump and cleaned it.. there were no signs of being blocked. It is swirling, but quite slow moving, compared to PS1 and PS2. @Davidlam, I am attaching photo. Want to know which SSxx you suggested checking? Quote Link to comment Share on other sites More sharing options...
TECNOR Posted September 13 Report Share Posted September 13 In the manual service you found all about problem. Quote Link to comment Share on other sites More sharing options...
Dave S Posted September 13 Report Share Posted September 13 The BF tank will not swirl as much as the STB as it is a larger tank. If the circulation is good, it’s likely the issue is with SSR that controls the BF heater. SSR2 is for the BF heater. Quote Link to comment Share on other sites More sharing options...
Noel D Posted September 28 Author Report Share Posted September 28 Is there a temporary solution or fix to this issue? Or will need to replace the motherboard? Or just the SSR2 Relay? Quote Link to comment Share on other sites More sharing options...
Dave S Posted September 28 Report Share Posted September 28 1 hour ago, Noel D said: Is there a temporary solution or fix to this issue? Or will need to replace the motherboard? Or just the SSR2 Relay? As a temporary solution you can remove fuse F6 once the machine is up to temperature, this will disconnect the BF heater. Either you need to replace the relay PCB or have it repaired by replacing the SSR 2. Quote Link to comment Share on other sites More sharing options...
davidlam Posted September 28 Report Share Posted September 28 DIY add a manual on-off switch to the BF heater... or .. can someone help to check IF there is any idle (Not-in-use) same type SSR on the board that you can move it to SSR2 ?? Sorry I don't have qss38 wiring diagram We have QSS-3901G, NO qss-38xx here in my territory. Quote Link to comment Share on other sites More sharing options...
Dave S Posted September 28 Report Share Posted September 28 (edited) 5 hours ago, davidlam said: DIY add a manual on-off switch to the BF heater... or .. can someone help to check IF there is any idle (Not-in-use) same type SSR on the board that you can move it to SSR2 ?? Sorry I don't have qss38 wiring diagram We have QSS-3901G, NO qss-38xx here in my territory. The relay board is J391466 which is the same as the 37 series. There are no spare SSR's on that board, 3 are used for the solution heaters, the remaining 5 are for the dryer heater. Edited September 28 by Dave S Quote Link to comment Share on other sites More sharing options...
Noel D Posted September 29 Author Report Share Posted September 29 As a temporary solution, I am disconnecting the wire of Heater once it reached the required temperature and once it cools down, I connect the wires again, probably would be the same as fuse being taken on and off.. Thanks! Quote Link to comment Share on other sites More sharing options...
Dave S Posted September 29 Report Share Posted September 29 40 minutes ago, Noel D said: As a temporary solution, I am disconnecting the wire of Heater once it reached the required temperature and once it cools down, I connect the wires again, probably would be the same as fuse being taken on and off.. Thanks! Disconnecting the wire for the heater will also work! Interesting to see that on your machine it has little extension wires for the heater connections, I’ve not seen that before, on all the machines I have worked on it’s been very difficult to access the CD/BF heater connector plug, which is why I suggested removing the fuse instead. It must be something Noritsu did on the 38 series onwards. Quote Link to comment Share on other sites More sharing options...
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