User Manual

ManualsBrandsHayward ManualsHeaters & AccessoriesHayward FDXLBKP1930 Bezel and Keypad Assembly Replacement Kit for Hayward Universal H-Series Low Nox Pool Heater

Hayward Pool Products (Australia) Pty Ltd.

Tel: 1300 POOLS1 www.hayward-pool.com.au

USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

Figure 36: ERROR CODES

TCM ERROR CODES:

Note: If two or more faults are present at the same time, the error code highest on the

following table will be displayed.

Code Description Information

Limit string open

while call-for-heat

If the string of limit switches opens while there is a call-for-heat, the heater will

shutdown and go into lock-out. Automatic restart 2 minutes after the limit string

error condition is corrected.

SF Thermistor fault

An excessive temperature difference between the two thermistors (3°C or more)

or an “out of bounds” condition on either sensor (temperature less than 2°C or

greater than 82°C). The heater will shut down and go into lock-out. Automatic

restart 2 minutes after the thermistor error condition is corrected.

Rapid water

temperature rise

If water temperature rises too rapidly in two consecutive 10-second periods, the

heater will shut down and go into lock-out. Automatic restart after 2 minutes.

After the third occurrence in the same call-for-heat, the heater will go into lock-

out with automatic restarts disabled. Manual restart is required.

Excessive Water

Temperature

Inlet water temperature sensor is reporting a temperature in excess of 40°C.

Normal operation resumes 2 minutes after inlet water temperature sensor reports

temperatures of 40°C or less. This error functions in both normal and remote

thermostat modes.

Limit string open while

no call-for-heat

If the string of limit switches opens while there is no call-for-heat, the error code

will be displayed, but the control will continue to function. The error code will

be cleared when the condition is corrected.

Keypad button

stuck closed

If one of the keypad buttons is closed (pressed) for more than 30 seconds, the

error code will be displayed but the control will continue to function. The error

code will be cleared when the condition is corrected.

bo Bypass Operation mode

This is NOT an error code. If the user sees “bo” in the display, the TCM is in

Bypass Operation mode. To exit “Bypass Operation” mode, select “STANDBY”

mode, then press and hold both the “DOWN” and “MODE” buttons for 3 sec-

onds (until the “bo” code is no longer displayed).

. (dot) Auto restarts disabled

When a dot (decimal point) is displayed after the error code, this is an indication

that auto restarts are disabled. The TCM must be manually restarted.