Hayward Universal H-Series Natural Gas Owners Manual: H150FDN H200FDN H250FDN - Page 13

13 ERROR CODES: Figure 4 lists the error codes that may be displayed on the heater display board. Contact a qualified service company for assistance. Figure 4: ERROR CODES Code Description bD Internal fault/power-up error Information On initial trial for ignition. Automatic reset is immediate once the gas valve relay check results are acceptable. Gas valve sensed bD as "ON" error If valve is open when it should be closed the heater will shut down and go into lockout. Blower will operate until error condition is corrected. Automatic restart 2 minutes after error is corrected. Gas valve sensed bD as "OFF" error If valve is closed but flame is sensed the blower will run for 5 s then start a new ignition sequence. If error occurs 10 times during a call for heat the control will go into lockout. Automatic reset is 60 minutes. bD Data retrieval error If control input data is corrupted the heater will shut down and go into lockout. Flame present with gas If flame is sensed with the gas valve off the control will go into lockout. The HF valve "OFF" error blower will run until error condition is corrected. When corrected, control will run blower for 5 s then automatically restart after 2 minutes. PF Electrical supply wiring This code will display if 120V polarity is reversed, low voltage is detected, or if error the ground path is not sufficient. Reset is immediate after error is corrected. Blower vacuum switch If the blower prover switch does not close after the blower starts the control will AO open error stop the ignition trial go into lockout. The blower will continue to run. Automatic reset is immediate after the switch closes. Blower vacuum switch If the blower prover switch opens unexpectedly during operation the control will AO open when expected closed error shut down and attempt to re-light. If the switch does not close after the blower starts the control will go into lockout with the blower running. Automatic reset is immediate after error is corrected. Blower vacuum switch If the blower prover switch opens during the postpurge cycle (heater is not fir- AO open during post-purge ing) the control will display the error code. The post-purge cycle will be com- error pleted once the blower prover switch closes. Blower vacuum switch If the blower prover switch is closed before blower start-up the control will not AC closed when expected start the blower. Automatic reset is immediate when the switch opens. open error USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Pomona, CA Clemmons, NC Nashville,TN Tel: 908-351-5400 www.haywardpool.com