Hayward Universal H-Series Low NOx Owner's Manual: H150FDN H200FDN - Page 13

13 Figure 5: Error codes (continued) Prover switch open dur- If the blower prover switch opens during the post-purge cycle (heater is not fir- AO ing post-purge error ing) the control will display the error code. The post-purge cycle will be com- pleted once the blower prover switch closes. Prover switch closed AC when expected open error If the blower prover switch is closed before blower start-up the control will not start the blower. Automatic reset is immediate when the switch opens. 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. HS Excessive water temperature error If water temperature exceeds 105°F the heater will shut down and go into lockout. Automatic restart is 2 minutes after water temp. drops below 105°F. Rapid water HE temperature rise If water temperature rises too rapidly the heater will shut down and go into lockout. Automatic restart is after 2 minutes. After the third occurrence in the same call for heat the heater will lock out. 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. EE EEPROM error 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