Question about Hayward Pool & Spa
Get SF and H5 message. Occasionally see 103F or 104F before SF kicks in. Heater has not run, so water temp is likely in the low 60s. sf is sensor failure replace
SOURCE: Hayward H400 heater problem
LO usually indicates low water pressure. Check the pressure in your filter. You may need to backwash. If the filter is to clogged then the water pressure in the heater is so low that it won't activate the pressure switch. While checking the pressure turn the pump off and then on to make sure the pressure gauge is actually working. Also check the pressure coming out of the inlets into the pool. You should be able to tell if you have sufficient water pressure.
Posted on Jan 28, 2009
check pressure switch operation most heaters will not operate without sufficient water flow/pressure. You can use a multimeter to troubleshoot the wiring using the schematic. If its induced draft milivolt ignition verify there is suffiecient gas flow to the unit
Posted on May 26, 2009
Could the Error code be HS? That is high temperature limit. Perhaps you' don't have enough flow, allowing the heater to heat the water to a temperature higher, than the thermostat setting. Make sure your bypass valve is closed, allowing full flow through the heater. Check your filter pressure differential , and skimmer baskets.
You didn't give your model number, and there are many models. You can go the Hayward website below and select your exact model number and download the manual. The manual will explain each error code.
Posted on Jul 05, 2010
You didn't indicate exatctly which model you have. But on most the AO error code is :Blower vacuum switch
open error 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.Check to be sure combustion blower starts
If you don't have your manual you can download one for your exact model at : www.haywardnet.com
Posted on Jul 29, 2010
SOURCE: H400 Hayward Pool Heater keeps
This are the codes for your hayward machine:
LED Diagnostics Codes Description of Error Codes IF Ignition Failure SF Temperature Sensor Input Failure HS Max. Return Water Temp. Exceeded HF Flame Present with Gas Valve Not Energized LO Temp. Limit Switch Fault or Water Pressure Switch Fault or Vent Pressure Switch Fault AC Blower Vacuum Switch Closed AO Blower Vacuum Switch Open Additional Codes for IDL2 series BD Bad Board or Secondary High-Voltage Fault EE Bad Board CE Communication error (between module and display interface assembly) IO Ignitor Failure SB Keypad Failure
Posted on Jun 05, 2011
Tips for a great answer:
May 25, 2014 | Hayward H-series Electronic Gas Pool...
Dec 29, 2012 | Pool & Spa
Jun 04, 2017 | Sta Rite Sta-Rite Max-E-Therm High...
Aug 13, 2011 | Hayward H-series Electronic Gas Pool...
Feb 28, 2010 | Hayward H Series Pool & Spa Heater 400k...
Oct 06, 2009 | Sharp SF 2020 Copier
May 27, 2009 | Sharp SF 2540 Copier
129 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: