I have several circulation pumps that would fix a flow error or FL1 error code in most Hot Tubs. Prices are as follows:
Laing E14-NSTNDNN2W-02 ($225)
Laing E10-NSHN2W-20 ($200)
Waterway Tiny Might TM-0061N11C ($175)
US Motor K55MYGRD-8367 ($200)
US Motor (K55MYNSY-1168 ($200)
AO Smith F48R46B13 ($200)