Service Manual

Error Code Definitions

For models with Honeywell Integrated Control

ERROR CODE DEFINITIONS

If the water heater has an operating problem, there will be a number in the water heater display with “Service

Needed” shown below the error code number. Note the error code and the definition in the chart below. This

label appears on the control box under the water heater display. The

following sections will provide instructions

for servicing each error code.

HONEYWELL INTERGRATED CONTROL ERROR CODES

LOW FLAME SENSE CURRENT

FLAME SENSED OUT OF NORMAL SEQUENCE (BEFORE OPENING GAS VALVE OR AFTER CLOSING GAS VALVE)

FLAME DETECTED BEFORE IGNITION

FLAME DETECTED AFTER A HEATING CYCLE COMPLETES

LOWER SENSOR READINGS FAULTY

FLAME ROD SHORTED TO GROUND

AC LINE FREQUENCY ERROR - SIGNAL TOO NOISY OR FREQUENCY INCORRECT

LINE VOLTAGE TOO LOW OR HIGH

DC OUTPUT VOLTAGE UNSTABLE

MAXIMUM NUMBER OF RETRIES DETECTED

MAXIMUM NUMBER OF IGNITION RECYCLES DETECTED

ELECTRONICS FAILURE

HIGH WATER TEMPERATURE (OVER 200°F)

DEFINITION

ERROR

CODE

IF ANY OF THE ABOVE CODES APPEAR ON THE CONTROL DISPLAY, CONTACT YOUR PLUMBER OR QUALIFIED SERVICE AGENT FOR SERVICE OF THE WATER HEATER.

FLOW SWITCH OR DAMPER FAILED TO CLOSE OR OPEN 29

BLOCKED VENT SWITCH (OVER 240°F)26