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Hydro-Shark SH-7 heating issues

bubbamwt Member Posts: 1
My Hydro-Shark SH-7 is no longer heating. I need to understand the meaning of the modulation status lights. It blinks green 6 times followed immediately by a red blink. Then three red blinks followed by 5 red blinks; then the whole process begins again. This is a closed system. The system hasn't been used for a few years and I flushed water through each loop to eliminate any air. The system maintains a pressure of 15psi. The pump and expansion tank are also good.


  • Big-D
    Big-D Member Posts: 21
    The red lights will flash a sequence of 3 digits i.e. Flash= 1, pause, flash, flash =2--pause-- flash flash, flash = 3. This indicates a 123 error code. The first digit or flash it difficult to pick up. Otherwise hold down the blue button on the circuit board for 10 seconds or less. The piezo speaker will emit a tone indicated the 3 digit error code. There are numerous 3 digit error codes that indicate element issues, thermistor issues or high limiting etc...
    Send me a message and I will email you the codes
  • jphillips
    jphillips Member Posts: 1
    Might you have a error code list for the SH-9 boiler?
    John Phillips