Troubleshooting Guide
Symmons Industries, Inc. ■ 31 Brooks Drive ■ Braintree, MA 02184 ■ Phone: (800) 796-6667 ■ Fax: (800) 961-9621
Copyright © 2022 Symmons Industries, Inc. ■ www.symmons.com ■ gethelp@symmons.com ■ ZV-3425 REV D ■ 031522
Care and Cleaning
Trouble Shooting Chart
Problem Cause Solution
Water ow is less than normal.
Screen in cartridge is dirty or 
clogged.
1) Remove cartridge and clean un-
der running water.
2) Remove cartridge and clean in    
household vinegar or replace by 
ordering cartridge replacement kit.
Water continues to run colder than
original temperature setting.
Check valve is not completely 
sealed allowing cold water to mix 
with hot.
Remove screen/check valve and
clean under running water.
Valve is leaking around the cap
retaining nut area.
Water leaking from o-ring seal.
Replace cartridge by ordering 
cartridge replacement kit.
Tempered hot water temperature is 
not hot enough.
Hot water supply into valve is not 
10°F (5.55°C) above desired set 
point temperature. Temperature 
setting it to low.
Increase hot water supply
temperature into valve. Reset 
temperature according to "Setting 
valve temperature" instructions.
Remove cartridge and clean valve body in household vinegar to remove corrosive mineral build up. Rinse 
under running hot water to ensure valve is free of foreign debris.
WARNING: This product can expose you to chemicals including lead, which is known to the state of California to 
cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

