Hayward H250FD Owner's Manual page 14

14
Figure 4: ERROR CODES (continued)
Code Description
Igniter open error
IO
Thermistor error
SF
Water Temperature
Sensing Error
HS
Keypad button stuck
Sb closed error
Ignition failure error
IF
Communication error
CE
Limit string open error
LO
EEPROM ERROR
EE
Information
If the control is not in lockout and senses that the igniter circuit is open when the
blower is running the control will turn off the blower and go into lockout. Auto-
matic restart 2 min after error is corrected.
An excessive temperature difference between the two thermistors (5 °F or more)
or an "out of bounds" condition on both sensors (less than 10°F or greater than
180°F) will result in the error code. Automatic restart is 2 minutes after the error
is corrected.
A) Inlet water temperature sensor is reporting a temperature in excess of 104°F.
Normal operation resumes 2 minutes after inlet water temperature sensor reports
temperatures of 104°F or less. This error functions in both normal and remote
thermostat modes.
or
B) Inlet water temperature sensor is reporting a temperature change at a rate
faster than 6°F in 60 seconds, indicating a potentially damaging low water flow
conditon. Normal operation resumes when temperatures stabilize. If this condi-
tion is detected 3 times, the heater will lock-out until the electrical power is
cycled off and back on.
If one of the keypad buttons is closed (or pressed) for more than 30 s the error
code will be displayed but the control will continue to function. The error code
will be cleared when the condition is corrected.
If the control exceeds the maximum number of ignition retries or recycles the
heater will shut down and go into lockout. Automatic reset is 60 minutes.
If communication between the ignition board and the display board is not estab-
lished within 3 s of power-up an error will be displayed. After communication is
established, if it is lost for 30 s, the error will be displayed. The error code will
be cleared upon a valid data exchange between boards.
If the limit string opens the heater shuts down and goes into lockout. Automatic
restart is 2 minutes after the error condition is corrected and the limit string
closes. See below for more detail.
An error was detected in the ignition control circuit board.
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400 www.haywardpool.com