Hayward Universal H-Series Owners Manual: H150FDN H200FDN H250FDN H300FDN H350 - Page 14

14 Figure 4: ERROR CODES (continued) Code Description Information Igniter open error IO 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. Automatic restart 2 min after error is corrected. Thermistor error SF 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. Water Temperature Sensing Error 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. HS 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 condition is detected 3 times, the heater will lock-out until the electrical power is cycled off and back on. Keypad button stuck Sb closed error 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 Ignition failure error 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. Communication error CE If communication between the ignition board and the display board is not established 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. Limit string open error If the limit string opens the heater shuts down and goes into lockout. Automatic LO restart is 2 minutes after the error condition is corrected and the limit string closes. See below for more detail. EEPROM ERROR EE 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