An Alternate Control Box is the New IN.YE-5 By Gecko. It is the next generation of controls and cost less. BDLYE5K353OP
Gecko S-CLASS or SSPA Spa Control Box With 4.0 KW Heater
NOTE: THIS CONTROL BOX REPLACES "HS2" SYSTEMS. IF YOU SEE "HS2" IN THE MODEL & OPTIONS CODE THEN THIS IS THE CORRECT CONTROL BOX. FOR EXAMPLE: Model - SC-MP-P122-P212-B1-01. Options - NE-LS-H5.5-AMP-HS2
Works with the Topside Control Posted Below Sold under both part numbers: 3-72-7074 & 0202-205162
Click here For Model/Options Code Defined. Schematic and Jumper Settings Gecko SSPA-1 and SSPA-MP Spa Pack Service Manual TSC-8-GE2 Topside Control Operation Instructions
* Installation instructions are on the back cover, please be sure to look at the jumper settings and wiring instructions for each pump, blower etc. Specifically the white wire to each one of these appliances. It is this wire that designates weather it will operate at 120 volts or 220 volts.