John Wood Takagi - 110-310-510 - Manual (Page 32)

32
110 & 310 510
Malfunction description Diagnosis
Red LED TK-RE02 TM-RE30
N/A N/A 441 Flow Sensor Failure (Easy-
Link System only) Check for connection/breakage of
wires and/or debris on the flow sensor
impeller. (Part #402, 717) •
Six Times 51 510 Abnormal Gas Solenoid Valve Check for connection/breakage of
wires (Part #708) and/or burn marks
on the computer board (Part #701). •
55 N/A Abnormal Main Gas Valve Check for connection/breakage of
wires (Part #708) and/or burn marks
on the computer board (Part #701). •
Four Times 61 611 Fan Motor Fault Check for connection/breakage of
wires, dust buildup in the fan motor
(Part #103) and/or burn marks on the
computer board (Part #701).
Check for frozen/corrosion of connec-
tors (Part #103). •
•
N/A N/A 651 Flow Adjustment Valve Fault
(Easy-Link System only) Inspect the flow adjustment valve (Part
#402), for connection/breakage of
wires (Part #718), locked motor drive
due to scale buildup, and/or water
leakage. •
One Time 70 701 Computer board Fault Check for connection/breakage of
wires (Part #714) and/or burn marks
on the computer board (Part #701).
Check the power supply of the water
heater. •
•
Six Times 72 721 False Flame Detection Check if condensate drain is installed
on the vent collar of the water heater.
Check if there is leaking from heat
exchanger (Part #401). •
•
N/A 74 741 Miscommunication between
water heater and remote
Controller Check the model type of the remote
controller.
Inspect the connections between the
water heater and remote controller.
Check the power supply of the water
heater. •
•
•
N/A N/A 761 Miscommunication in Easy-
Link system Check if the connections between the
parent unit and the child units are cor-
rect. Refer to pg. 20-22. •