State GTS-140-PIH User Manual download pdf (Page 47)

47 Page

Remote

Green

LED

Malfunction

description

Diagnosis

391

Two Times Air-fuel ratio rod

failure

• Check for connection/breakage of wires (Part #708)

and/or soot on the AFR rod (Part #108).

510

Six Times Abnormal main gas

solenoid valve

• Check for connection/breakage of wires (Part #707)

and/or burn marks on the computer board (Part #701).

• Check for signs of vent corrosion.

• Check gas valve contacts and gas valve wire harness

connections for signs of rust or corrosion.

551

Six Times Abnormal gas

solenoid valve

• Check for connection/breakage of wires (Part #707)

and/or burn marks on the computer board (Part #701).

• Check gas valve contacts and gas valve wire harness

connections for signs of rust or corrosion..

611

Four Times 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 connectors (Part #103).

701

One Time Computer board fault • Check for connection/breakage of wires (Part #711).

711

One Time Gas solenoid valve

drive circuit failure

• Refer to the 111 and 121 error codes.

721

Six Times False flame

detection

• Check if there is leaking from heat exchanger (Part #401).

741

N/A 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.

751

N/A Miscommunication

between water heater

and temperature

controller (Indoor

model only)

• Inspect the connections between the water heater

and temperature controller.

• Check the power supply of the water heater.

941

Five Times Abnormal exhaust

temperature (Indoor

model only)

• Check to see of the exhaust temperature is higher

than 149°F (65°C).

991

Five Times Imperfect

combustion

• Check if the gas type of the water heater matches

the gas supplied to it.

• Inspect the environment around the water heater.

Determine how long the water heater has been

installed and match DIPswitches.

• Check the altitude/elevation of the area of where

the water heater is installed.

• 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 the fan motor (Part #103), especially if the

water heater has been installed in a contaminated area

• Check the DIPswitches match gas type of the water

heater.

• Check the manifold pressure at Max. and Min.

• Check combustion chamber tube (part #117) to see if it

is clear and securely installed.

Troubleshoong

Owner's Guide

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State GTS-140-PIH User Manual Page 47

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