Error Codes - Hayward H250FD Owner's Manual

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
Internal fault/power-up
bD
error
Gas valve sensed
bD as "ON" error
Gas valve sensed
bD as "OFF" error
bD Data retrieval error
Flame present with gas
HF valve "OFF" error
Electrical supply wiring
PF
error
Blower vacuum switch
AO open error
Blower vacuum switch
open when expected
AO
closed error
Blower vacuum switch
AO open during post-purge
error
Blower vacuum switch
AC closed when expected
open error
Information
On initial trial for ignition. Automatic reset is immediate once the gas valve relay
check results are acceptable.
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.
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.
If control input data is corrupted the heater will shut down and go into lockout.
If flame is sensed with the gas valve off the control will go into lockout. The
blower will run until error condition is corrected. When corrected, control will
run blower for 5 s then automatically restart after 2 minutes.
This code will display if 120V polarity is reversed, low voltage is detected, or if
the ground path is not sufficient. Reset is immediate after error is corrected.
If the blower prover switch does not close after the blower starts the control will
stop the ignition trial go into lockout. The blower will continue to run. Automatic
reset is immediate after the switch closes.
If the blower prover switch opens unexpectedly during operation the control will
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.
If the blower prover switch opens during the postpurge cycle (heater is not fir-
ing) the control will display the error code. The post-purge cycle will be com-
pleted once the blower prover switch closes.
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.
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400 www.haywardpool.com
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