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John Wood Takagi - 710 User Manual

Page 24

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24

Remote Controller: TM-RE30 (Optional)

PROBLEM

POSSIBLE SOLUTIONS

Remote controller does not
display anything when the
power button is turned on.

Press the ON/OFF button. If the lamp lights up:
• This is normal. When the unit has not operated for five minutes or more, the display

turns off to converse energy.

If the lamp does not light:
• Make sure the unit has power supply.
• Make sure the connection to the unit is correct.(pg. 12)

An ERROR code is dis-
played.

• Please see the pg. 24.

Easy-link System

PROBLEM

POSSIBLE SOLUTIONS

How are the unit numbers assigned?

7-Seg LED

Button to check

unit numbers

• For an Easy-Link system, other than the PARENT Unit (which is always

labeled #1), all the other units (the CHILD units) are numbered ran-
domly.

• To check which numbers are assigned to which units, push the button

on the computer board of a unit as shown below. The unit number will
be displayed on the 7-Seg LED.

TROUBLESHOOTING – ERROR CODES

• The 710 units are self diagnostic for safety and convenience when trouble shooting.
• If there is a problem with the installation or the unit, it will display a numerical error code on the remote controller (if

installed) or on the 7-Seg LED of the central computer board and section computer board to communicate the source
of the problem.

• Consult the following chart for the cause of each error code.

Error

Code

Malfunction

description

Error

Code

Malfunction

description

Error

Code

Malfunction

description

031

DIPswitch Setting fault

391

Air-fuel Ratio Rod Failure

661

Water Control Valve Fault
(Bypass function)

101

Warning for 991 Error Code

441

Flow Sensor Failure

701

Computer board Fault

111

Ignition Failure

510

Abnormal Main Gas Valve

721

False Flame Detection

121

Flame blows out

551

Abnormal Gas Solenoid
Valve

741

Miscommunication between
water heater and remote
controller

311

Output Thermistor Failure

611

Fan Motor Fault

761

Miscommunication in Easy
link OR Multi-unit system

321

Inlet Thermistor Failure

631

Abnormal External Pump

991

Abnormal burning

331

Mixing Thermistor Failure

651

Water Control Valve Fault
(Flow Adjustment function)