Hayward H400FDN Support and Manuals
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Hayward H400FDN Videos
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Popular Hayward H400FDN Manual Pages
Energy Guide Label - Page 1
U. Government
Federal law prohibits removal of Similar Models
96.0 Most Efficient
• Efficiency range based only on models fueled by natural gas. • For more information, visit www.ftc.gov/energy.
51300052801 REV C
Pool Heater Natural or Propane Gas
Hayward Industries, Inc. Models H250FD, SW250DH,
H400FD, SW400DH, HDF275, HDF400,
HDF400BH, W3H250FD, W3H400FD
Thermal ...
Universal H Series Troubleshooting Guide - Page 8
Starts over at #2 of any type there may be a 5-10 sec delay for certain situations.
8 Gas valve de-energizes (for heat is stopped.
NOTE: When making keypad entries of heating mode sequence. 3. Retries 3 times until demand for 30 second, ...: 1. Waits 60 minutes then retries 3 more times. 5. UHS Sequence of Operation: Failure to retry every 60 minutes, until lockout (IF code). 4.
Universal H Series Troubleshooting Guide - Page 17
...adjustment occurs, verify inlet gas pressure meets the requirement
set forth by rotating valve clockwise, (counter clockwise to
installation manual and/or contact installer.
17
IF it does, continue to
step 4. Remove plug. Verify heater specifications off the heater
plate (bottom front inside heater)
Step 3
Step 4
*Adjust the manifold pressure (at the gas valve)
IF inlet pressures...
Universal H Series Troubleshooting Guide - Page 19
... open Bad board or secondary high voltage fault Communication Error Between Control Module and Display Interface Assembly Bad board Flame present with Gas Valve not energized. Diagnostic Codes
Below is a list of all Diagnostic Codes for each Code are covered on the following pages. Troubleshooting Steps for the UHS Heater. Maximum return water temperature exceeded and / or rapid water...
Universal H Series Troubleshooting Guide - Page 20
... outlines the various replacement parts required for this troubleshooting guide.
* Heaters made prior to 07/16 that want the new display/bezel/keypad, will need to replace the old display with the Kit-Bezel Control Panel specific to their model heater.
Part Number: Part Number:
(H150-H400)
(H500)
IDXL2TRF1930 IDXL2TRF1930
Description
Transformer
Part Number: Part Number:
(H150-H400...
Universal H Series Troubleshooting Guide - Page 27
...
Is resistance
YES
correct? NO
Install correct plug and
replace fuse
YES
Did this correct the
problem?
NO
Correct/repair transformer
wiring
Contact Support (908) 355-7995
Replace transformer: IDXL2TRF1930
27
NO
Is transformer YES
wiring damaged, pinched, or worn?
Open FC1 &/or F2 Fuse
Open FC1 &/or F2 Fuse
Problem solved
Correct voltage YES
selector plug...
Universal H Series Troubleshooting Guide - Page 31
.... 20). IF OK, go
to ground.
IF OK and the problem still exists, replace the
ICB (pg. 20)
31 IF any wires and ground, then this implies a short has occurred and the gas valve will need to be replaced (refer to pg. 20 for part number). IF wiring is not shorted
ICB wiring
Step 3E
Step...
Universal H Series Troubleshooting Guide - Page 36
..." code may clear with a reset of power, power cycle
the heater
YES Did the "CE"
code clear? 6.
NO
Check display ribbon cable connection
Secure connections
& retest
Problem solved
Contact Support (908) 355-7995 Service LED ON: "EE" OR "CE" Code
"EE" OR "CE" Code
Check display for "EE" code
Is "EE" code YES
present? NO
Replace ICB: FDXLICB1930
Problem solved
Did "CE" code...
Universal H Series Troubleshooting Guide - Page 40
..." Code
"SF" OR "HS" Code
Check display for High Sense (water temperature).
NO
YES
Ohm thermistor, checking each red to
YES
black, do the readings
differ by more than 1°? Replace ICB: FDXLICB1930
Make sure water inlet & outlet are
YES
plumbed correctly,
are they reversed? NO
Replace thermistor: FDXLTER1930
Plumb correctly in compliance with installation manual...
Universal H Series Troubleshooting Guide - Page 44
NO
Did the "HF" YES
code reappear?
NO
Verify error code & jump to section that best describes error
Replace gas valve: Please refer to (pg. 20)
44
Reduce the temperature set point until heater
stop firing
Problem solved
Did the "HF" YES
code reappear?
Service LED ON: "HF" Code
"HF" Code
Power cycle the heater at the breaker
Does heater YES
fire? NO
10. NO
Toggle the...
Universal H Series Troubleshooting Guide - Page 45
... power cycling clears to the
"HF" message and the heater fires, drop the temperature to be replaced.
IF "HF" reappears, go into lockout. Service LED ON: "HF" Code (cont.)
"HF" (heat or flame sensed) will run until corrected. When corrected, control will occur if flame is sensed when the gas valve is defective and needs to suspend heating.
Universal H Series Troubleshooting Guide - Page 52
... verify flame
Inspect gas YES Is heater's gas YES sensor & gas valve
valve in heater
valve ON? connections are
YES
NO
Turn ON gas
secure
YES
Are connections
valve and retest
YES
Is inlet and manifold gas
secure?
NO
Turn on main gas supply &
retest
Go to gas valve during
call for heat
pressure correct? NO
YES Is voltage
correct? Service LED ON: "IF" Code
"IF" Code
Is main gas...
Universal H Series Troubleshooting Guide - Page 53
... tech support:
(908) 355-7995
53 12. Service LED ON: "IF" Code
Section B (continued from previous page)
Is correct flame YES
sensor installed OR damaged? NO
Replace flame sensor:
IDXLFLS1930
Check for damaged OR wrong blower
air inlet plate
NO
Is plate
YES
damaged/
wrong?
NO
Inspect and/or clean burner tubes
& orifices
Replace with new burner kit: FDXLBRN1930 OR Gas Valve...
Universal H Series Troubleshooting Guide - Page 55
... Code (cont.)
Voltage/pressure off gas valve
Step 12E
Verify correct flame sensor
Step 12F
Verify 22-28VAC off gas valve during ignition trial. IF present & no pressure (manometer attached), replace valve. IF correct, go to step 12G. IF NOT damaged, contact tech support (908) 355-7995. Otherwise, replace ICB (pg. 20).
IF damaged, replace (pg. 20). 12. IF 3" is installed OR IF sensor...
Universal H Series Troubleshooting Guide - Page 58
...NO
Replace blower: Please refer to section B
NO
Install correct plug and
replace fuse
Replace blower vacuum switch: FDXLBVS1930
Replace ICB: FDXLICB1930
58
Replace vacuum ...Replace blower: Please refer to
(pg. 20)
Go to
(pg. 20)
Is vacuum tube YES
damaged? NO
Correct voltage YES
selector plug? NO YES Are blower
vacuum switch wires damaged?
Service LED ON: "AO" Code
"AO" Code
Replace...
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