Viqua S2Q-PA User Manual (English)

Questions and Answers:

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Jack GarciaAug 17, 2025
What to do if the UV lamp failure alarm is on for a new lamp in my Viqua Water Filtration System?
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  Jeremiah SinghAug 17, 2025
  If the UV lamp failure alarm is on for a new lamp in your Viqua Water Filtration System, it could be due to a loose connection between the UV lamp and the connector. Try disconnecting the UV lamp from the connector and reconnecting it, ensuring a tight fit. Another possibility is moisture build-up in the connector, preventing a solid connection. Eliminate any chance of moisture getting to the connector or lamp pins.
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lindsayperryAug 20, 2025
What to do if Viqua S2Q-PA produce heated water?
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  Elizabeth RosarioAug 20, 2025
  If your Viqua Water Filtration System is producing heated water, simply run the water until it returns to the ambient temperature. This should resolve the issue.
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katie45Aug 22, 2025
What to do if my Viqua Water Filtration System is leaking water?
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  Tracy WilsonAug 22, 2025
  If your Viqua Water Filtration System is leaking water, there could be several reasons. It might be due to a problem with the O-ring seal on the retaining nut or UV sensor. Ensure the O-ring is correctly placed, inspect it for any damage, clean it, and moisten it with water or a lubricant before reinstalling. Replace the O-ring if necessary. Another cause could be condensation on the UV chamber due to high humidity and cold water; in this case, check the location of the system and control the humidity. Also, check the thread connections of the inlet/outlet ports, reseal them with Teflon tape, and re-tighten them.
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Kathleen OrrAug 28, 2025
What does it mean when the LED display reads “A3” on my Viqua Water Filtration System?
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  Daniel FowlerAug 28, 2025
  If your Viqua Water Filtration System's LED display reads “A3”, this indicates that the UV lamp life has expired, and the countdown is at “0” days. Refer to Section 5.1.2, Understanding your A3 Code. Press the reset button for a deferred alarm, then replace the UV lamp.
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seancolemanAug 30, 2025
How to fix pressure drop in Viqua Water Filtration Systems?
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  michael97Aug 30, 2025
  If you're experiencing a pressure drop in your Viqua Water Filtration System, it could be due to a clogged sediment pre-filter. Replace the filter cartridge with an appropriate 5-micron cartridge. Note that fluctuations may occur in source pressure, so check your source water supply. A flow regulator will also result in pressure drop when approaching full flow.
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ellisderrickSep 2, 2025
Why is the LED display blank on my Viqua Water Filtration System?
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  annadanielSep 2, 2025
  If the LED display on your Viqua Water Filtration System is blank, the controller might be in UV lamp failure mode. Refer to Section 5.1.5, UV Lamp Failure. Replace the UV Lamp, refer to Section 4.1. Power the system down, allowing it to reset itself, then apply power to confirm that the controller can power the UV lamp. Also, check to see if there is sufficient power to the UV system.
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William DanielsSep 5, 2025
Why is my Viqua Water Filtration System shutting down intermittently?
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  Jamie JonesSep 5, 2025
  If your Viqua Water Filtration System is shutting down intermittently, the controller may be interrupted. Ensure the system has been installed on its own circuit, as other equipment may be drawing power away from the UV system. The UV system should not be installed on a circuit that is incorporated into a light switch.
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Benjamin DawsonSep 8, 2025
Why does the water from my Viqua Water Filtration System appear milky?
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  Sarah HubbardSep 8, 2025
  If the product water from your Viqua Water Filtration System appears milky, it is caused by air in the water lines. Run the water until the air is purged.
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Joseph SimpsonSep 10, 2025
Why is the green LED off on my Viqua Water Filtration System (12 VDC only)?
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  ryanandersonSep 10, 2025
  If the green LED is off on your 12 VDC Viqua Water Filtration System, it could be due to UV lamp failure. Replace the UV Lamp, refer to Section 4.1. It could also indicate no input voltage to the controller.
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Mario DawsonSep 13, 2025
Why is the water from my Viqua Water Filtration System heated?

Viqua S2Q-PA Specifications

General

Model	S2Q-PA
Category	Water Filtration Systems
Application	Residential
UV Dose	40 mJ/cm²
Power Supply	120 V / 60 Hz
Voltage	120 V
Lamp Life	9000 hours
Maximum Operating Pressure	125 psi
Product Type	UV Water Disinfection System
Type	Point-of-Entry (POE)
Inlet/Outlet Size	3/4 inch
Maximum Water Temperature	113°F (45°C)