172-65142M-04 (TC8) 11 Oct 2021
11
Troubleshooting
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product
has cooled to room temperature. Disassembling or removing the
product when it is hot or under pressure may lead to discharge of fluids,
causing burns, other injuries or damage.
CAUTION
This product is shipped after stringent checks and inspection, and should perform
its intended function for a long period of time without failure. However, should
there be any problems encountered in the operation of the product, consult the
troubleshooting guide below.
Problem
Cause
Inspection area
Remedy
The temperature
rises above the set
point
the seal is clogged
with dirt/scale
valve, valve seat
clean the valve or
the valve seat
replace the valve
body or the main
valve unit
the seal is worn
valve, valve seat
the thermostat is
damaged
temperature sensor,
capillary tube,
temperature
adjustment ring
replace the
temperature
regulation
thermostat
The temperature
does not reach the
set point
the inlet valve is
closed
inlet valve
open the inlet valve
the strainer is
clogged with dirt
strainer screen
clean the screen
