Takagi T-H3J-DV / 240H Installation Manual And Owner's Manual page 52

Green
Remote
LED
741 N/A
751
N/A
761
N/A
941 Five Times
991 Five Times
Malfunction
description
Miscommunication • Check the model type of the remote controller.
between water • Inspect the connections between the water heater
heater and remote and remote controller.
controller • Check the power supply of the water heater.
Miscommunication • Inspect the connections between the water heater
between water
and temperature controller.
heater and
• Check the power supply of the water heater.
temperature
controller
Miscommunication • Check if the connections between the parent unit
and the child units are correct. Refer to p. 29 to 32.
in Easy-Link system
• Check that the power is on to all Child units.
Abnormal exhaust • Check if the set temperature is higher than 60 °C
temperature
(140 °F) and the system is Recirculation.
Imperfect • Check the gas type of the water heater matches the
gas supplied to it.
combustion
• Inspect the environment around the water heater.
Determine how long the unit has been installed.
• Check the altitude/elevation of the area of where
the water heater is installed and match DIP switches.
• Check if there is any blockage in the intake air and/
or exhaust.
• If the water heater is installed as a direct-vent system,
check whether there is enough distance between the
intake air terminal and the exhaust terminal.
• Check if there is grease and/or dirt in the burner (Part
#101) and fan motor (Part #103), especially if the
water heater has been installed in a contaminated
area.
• Check the DIP switches match gas type of unit.
• Check the manifold pressure at Max. and Min.
• Check proportional gas valve hose.
52
Page
Owner's Guide
Troubleshooting
Diagnosis