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Related Manuals for Hayward IDL
Summarization of Contents
AC Blower Vacuum Switch – Failed Closed
Parts That May Be Needed
Lists components relevant to the AC fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the AC fault.
AO Blower Vacuum Switch – Failed Open
Parts That May Be Needed
Lists components relevant to the AO fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the AO fault.
BD Bad Board or Secondary High Voltage Fault
Parts That May Be Needed
Lists components relevant to the BD fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the BD fault.
CE Communication Error
Parts That May Be Needed
Lists components relevant to the CE fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the CE fault.
EE Electrical Error
Parts That May Be Needed
Lists components relevant to the EE fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the EE fault.
HF Flame Present with Gas Valve Closed / Heater Flame Sensing Fault
Parts That May Be Needed
Lists components relevant to the HF fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the HF fault.
HS Maximum Return Water Temp Exceeded
Parts That May Be Needed
Lists components relevant to the HS fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the HS fault.
IF Ignition Failure (Insufficient Fuel)
Required Diagnostic Tools
Lists tools needed for diagnosing the IF fault.
Parts That May Be Needed
Lists components relevant to the IF fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the IF fault.
IO Ignitor Failure
Parts That May Be Needed
Lists components relevant to the IO fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the IO fault.
LO Switch Open within Safety Limit String
Possibility 1: Water Pressure Switch Fault
Troubleshooting the water pressure switch for LO code.
Possibility 2: Vent Pressure Switch Fault
Troubleshooting the vent pressure switch for LO code.
Possibility 3: High Limit Switch Fault
Troubleshooting the high limit switch for LO code.
LO Switch Open within Safety Limit String (IDL)
Possibility 2: Terminal Block Fault
Troubleshooting the terminal block for LO code (IDL).
Possibility 3: Vent Pressure Switch Fault
Troubleshooting the vent pressure switch for LO code (IDL).
Possibility 4: Temperature Limit Switch Fault
Troubleshooting the temperature limit switch for LO code (IDL).
LO Switch Open within Safety Limit String (ED2)
Possibility 2: Automatic Temperature Limit Switch Fault
Troubleshooting automatic temp limit switch for LO code (ED2).
Possibility 3: Manual Temperature Limit Switch Fault
Troubleshooting manual temp limit switch for LO code (ED2).
Possibility 4: High Limit Switch Fault
Troubleshooting the high limit switch for LO code (ED2).
Possibility 5: Inadequate Water Flow Fault
Troubleshooting inadequate water flow for LO code (ED2).
SB Keypad Failure
Parts That May Be Needed
Lists components relevant to the SB fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the SB fault.
SF Temperature Sensor Input Failure
Parts That May Be Needed
Lists components relevant to the SF fault code.
Diagnostic Sequence
Step-by-step troubleshooting procedures for the SF fault.
Fault Conditions with NO CODE
Heater Will Not Power Up
Troubleshooting steps when the heater has no power.
Low Voltage Circuit Fault
Troubleshooting steps for a low voltage circuit fault.
Open Fuse: FC2 or FC1
Troubleshooting steps for open fuses FC2 or FC1.
Open Fuse: FC3 or FC1
Troubleshooting steps for open fuses FC3 or FC1.
Open Fuse: FC4
Troubleshooting steps for open fuse FC4.
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