Jayco Seismic 2021 - Fresh Water System; Water Pressure Regulator (customer supplied); Fresh Water Holding Tank

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 This light will not appear on touchscreens, RV remote controls or
on a WiFi app, it will only appear on the Command Center switch panel.
Fresh Water System
All water contains contaminant and mineral particles that can cause fresh water system
odors. Untreated well water is a major source of water system odors. The fresh water
(potable water) system needs periodic sanitization and winterization to take care of all the
components in the plumbing system to discourage the growth of bacteria and other organ-
isms that can contaminate the water supply.
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Excessive pressure from the water supply source may be encountered in some parks, espe-
cially in mountain regions when using the fresh water inlet or black tank ush. Water pres-
sure regulators are available to protect your recreational vehicles plumbing system against
such high pressure.
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There may be several ways to ll the fresh water tank depending on the model. For details
of each method, refer to the Fresh Water Connections or the Utility Center (if so equipped)
sections. There are plastic overow tubes in the fresh water holding tank which allow water
to ow out of the water tank (see City Water Fill). Occasionally, there may be water coming
from the overow tubes when the fresh water holding tank is lled. This is normal and can
be a result of the recreation vehicle being parked on an incline, or the motion caused by start-
ing or stopping during travel.
A water pressure regulator is recommended to prevent damage to the plumb-
ing system or components. To prevent damage when using the city water
connection, a 45 lb. (315 KPa) rated water pressure regulator is recommended.
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 Do not cap, block or modify the fresh water tank overow tubes in any
way. Enough water pressure can build up during the lling process to
damage the plumbing system if the overow tubes are obstructed.
 Be careful not to overll the fresh water holding tank. It can pressurize
the tank, causing leakage and water damage and void the warranty. DO
NOT leave the tank unattended while lling.
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 DO NOT drink water deemed microbiologically unsafe or of unknown
quality.
 Never travel with full fresh, black or grey water holding tanks.
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