If anyone can help with this I would be so grateful. I have a Hayward H400 heater (but the board is the same for all digital models) with the digital controls and a varistor on the control board blew. Of course it blew out on the side with the specs so I have no idea what to replace it with. Hayward does not have the information and wants me to buy a new board ($400), which I refuse to do when I can just replace a $0.99 part. If anyone could do me a solid and look on theirs and tell me the specs it would be much appreciated. I really do hate to ask but it's truly my last resort.

Location:
unscrew the cover behind the display and controls. On the board it is labeled MOV1 and is right above where the largest connector plugs in.

Thanks
-T-