ok maybe
"right product, still not working, suspect main cpu toast"
VIQUA 650630 UV CoolTouch Fan Kit for PRO10, G, H, J, K
The CoolTouch fan (650630) prevents water temperature from overheating inside the UV chamber. VIQUA UVMAX G, H, J, K, Plus and Pro Series UV systems all need the CoolTouch fan to function properly.
Overall rating: 4.0 / 5 from 2 reviews.
Review topics: [].
"right product, still not working, suspect main cpu toast"
"Right product, on time"
Q:
Which UV systems use the VIQUA 650630 CoolTouch fan kit?
A:
The catalog-approved Fits value lists: PRO10, H (650651), H+ (650652), K (660001-R), K+ (660002-R), PRO10 (650647), PRO20 (650653), PRO24-100 (660095-R), PRO24-186 (660086-R), PRO30 (650659), PRO50 (660003-R). Match the exact system label and part number before ordering VIQUA 650630.
Q:
What does the CoolTouch fan kit do?
A:
It moves air around the chamber area to limit heat buildup during low-flow or no-flow periods without sending water to drain.
Q:
Why can excess chamber temperature cause alarms?
A:
Hot stagnant water can affect sensor readings and controller operation. The fan helps keep the chamber within the intended temperature range.
Q:
Is this the same as a temperature relief valve?
A:
No. The 650630 is a fan-based temperature-management accessory. Confirm the system calls for this kit rather than a plumbing-mounted CoolTouch valve.
Q:
Is the fan required on Plus models?
A:
The product page states that Plus models in the applicable UVMAX family require CoolTouch operation. Use the catalog Fits list to confirm the exact model.
Q:
What should I verify before replacing the fan?
A:
Confirm power is off, the fault is actually the fan or its connection, the controller supports the kit, and the mounting and cable routing match the service instructions.