Takagi 110 Outdoor Installation Manual And Owner's Manual page 48

110 and 310
Red Remote
Remote
LED 7 Seg LED
39* 391*
Two
Flashes
N/A N/A 441
51 510
Six
Flashes
55 N/A
Six
Flashes
61* 611*
Four
Flashes
N/A 651*
N/A
One
70* 701*
Flash
72* 721*
Six
Flashes
74 741
N/A
N/A 761
N/A
99* 991*
Five
Flashes
*These error codes will be cleared when water flow stops.
510
Malfunction
description
Air-fuel ratio • Check for connection/breakage of wires (Part #709) and/
rod failure
Flow sensor • Check for connection/breakage of wires and/or debris on
failure (Easy-Link
System only)
Abnormal gas • Check for connection/breakage of wires (Part #708) and/
solenoid valve
Abnormal main • Check for connection/breakage of wires (Part #708) and/
gas valve
Fan motor fault • Check for connection/breakage of wires, dust buildup
• Check for frozen/corrosion of connectors (Part #103).
Flow adjustment • Inspect the flow adjustment valve (Part #402), for
valve fault (Easy-
Link System only)
• Check for connection/breakage of wires (Part #714) and/
Computer board
fault
• Check the power supply of the water heater.
False flame • For indoor models, check if condensate drain is installed
detection
• Check if there is leaking from heat exchanger (Part #401).
Miscommuni- • Check the model type of the remote controller.
cation between • Inspect the connections between the water heater and
water heater
and remote • Check the power supply of the water heater.
controller
Miscommuni- • Check if the connections between the parent unit and the
cation in Easy-
Link System
Imperfect • Check the gas type of the water heater.
combustion • Inspect the environment around the water heater.
• Check the altitude/elevation of the area of where the
• Check if there is any blockage in the intake air and/or
• If the water heater is installed as a direct-vent system,
• Check if there is grease and/or dirt in the burner (Part
48
Diagnosis
or soot on the AFR rod (Part #108).
the flow sensor impeller (Part #402, 717).
or burn marks on the computer board (Part #701).
or burn marks on the computer board (Part #701).
in the fan motor (Part #103) and/or burn marks on the
computer board (Part #701).
connection/breakage of wires (Part #718), locked motor
drive due to scale buildup, and/or water leakage.
or burn marks on the computer board (Part #701).
on the vent collar of the water heater.
remote controller.
child units are correct. Refer to pp. 29 and 30.
Determine how long the unit has been installed.
water heater is installed.
exhaust.
check to make sure that there is enough distance between
the intake air terminal and the exhaust terminal.
#101) and the fan motor (Part #104), especially if the
water heater has been installed in a contaminated area.
Page
Owner's Guide
Troubleshooting