Can anyone help with a leak on the heat exchanger. I’ll attach a picture. The flare connection is leaking water out. I’ve been told there should not be water coming from here. Saying it’s not repairable. Reading the manual I have a choice of hot and cold. I only want heat. Living on the west coast need a heated pool. Need assistance, if I was to seal this fitting will it still heat. Looking forward to your answers. Need heat.