Hayward H400FDN Universal H Series Troubleshooting Guide - Page 23

Verify input power, Verify heater manufacture date, Models after August 2008, Voltage selector plug

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1. Heater Not Powering Up Verify heater manufacture date Step 1A Verify input power Step 1B For models manufactured prior to August of 2008, proceed to step 1B. IF model is later, go to 1C. Models after August 2008 Step 1C Verify 110-125 or 220-245VAC off fuse board (TB1). IF correct, go to 1D. IF NOT, correct source power. Voltage selector plug Step 1D IF voltage is present, go to step 1D. IF voltage is incorrect, correct source power. 23 Verify selector plug matches incoming line power. IF it does not, power OFF & correct. IF OK, go to 1E.

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For models manufactured prior to August of 2008,
proceed to step 1B. IF model is later, go to 1C.
Verify input power
Verify 110-125 or 220-245VAC off fuse board (TB1).
IF correct, go to 1D. IF NOT, correct source power.
Verify heater manufacture date
Step 1A
Step 1B
IF voltage is present, go to step 1D. IF voltage is
incorrect, correct source power.
Models after August 2008
Step 1C
23
Verify selector plug matches incoming line power.
IF it does not, power OFF & correct. IF OK, go to 1E.
Voltage selector plug
Step 1D
1. Heater Not Powering Up