Jaclo Thermostatic Valve, Rough - J-TH34 - Manual (Page 14)

jaclo industries | 129 Dermody Street Cranford, NJ 07016
p 908.653.4433 | 800.852.3906 f 908.653.1717 | 800.852.4133 JACLO.COM | PG 14
CREATED 5.2014
PROBLEM POSSIBLE CAUSE SOLUTION
Water leaks from
shower head / tub
spout when the
volume control is
shut off.
Water is hot or cold
but not mixing.
Can not adjust
water temperature
properly.
Low flow of mixed
water.
Cold water in nearby
faucet is lukewarm.
Thermostatic valve is
working properly, but
the water is not hot
enough, but water in
nearby faucet is hot
enough.
Thermostatic valve is installed
upside down or the supply lines
to the thermostatic valve are
reversed.
Remove trim and make sure the arrows on the check valve /
stops are facing toward the center of the
thermostatic valve.
If cartridge spindle rotates more than 270°
(DO NOT FORCE), replace cartridge.
Remove thermostatic cartridge and clean screens.
Refer to installation instruction for setting limit stops.
Set water temperature with a thermometer and adjust dial
assembly to reflect the measured temperature.
Refer to installation sheet.
Install with new check valve (s) / stop (s).
Refer to check valves / stops removal and installation
section of the installation sheets.
Check valves / stops are not opened
all the way.
Thermostatic cartridge is damaged.
Debris in screens of thermostatic
cartridge.
Limit stops are not set properly.
Dial assembly is not calibrated.
Check valve (s) / stops are not
opened all the way.
Install new check valves / stops. Refer to check valves / stops
removal and installation section of the installations sheets
Remove thermostatic cartridge and clean screens.
Remove trim and make sure the arrows on the check valve /
stops are facing toward the center of the thermostatic valve.
Check valve (s) / stops have been
damaged.
Debris in screens of thermostatic
cartridge.
Check valves / stops are not opened
all the way.
Check valve (s) / stops have been
damaged or filled with debris.
Limit stops are not set properly.
Boiler temperature not set high
enough.
Install new check valves / stops. Refer to check valves / stops
removal and installation section of the installations sheets
Refer to installation instruction for setting limit stops.
Thermostatic valve has cold water mixing with the hot water at
all times, so the water temperature on the boiler will need to
be increased to get the desired temperature.
CAUTION: increasing the temperature will affect all plumbing
throughout the system.
Refer to installation sheets for proper
installation.
The shower head is trapping
water behind the faceplate.
The volume control valve has
been installed incorrectly.
The ceramic disc in the cartridge
of the volume control valve has
been damaged.
Remove shower head and clean out the holes in the faceplate.
Reinstall shower head.
Arrow on side of volume control should be pointing away from
the thermostatic valve. If arrow can not be seen, remove trim
and cartridge. Look into the valve cavity. The location of the
larger hole indicates the outlet of the volume control valve,
the volume control is installed incorrectly. Refer to installation
sheets for proper installation.
Replace with a new cartridge
TROUBLE SHOOTING GUIDE