Question about Pool & Spa
It appears per your test that the heater May not be the problem as it shows that it may be good.
Your error message is a Flow condition / Restriction
Try cleaning the filter
Posted on Nov 14, 2014
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Posted on Jan 02, 2017
SOURCE: No Heat from Spa
Heater contactors "buzzing": Do you mean normal buzzing or extra loud buzzing? Loud buzzing or chattering can be caused by low voltage to a contactor. If normal sounds, then probably the relays on the contactors is working, but the contacts may be stuck, or burned enough so as not to make contact. First, get a voltmeter and check for 240 volts AC at the heater contactor terminals. If the voltage is low, most likely you need to check the contactors further. Check for dirty contacts, clean if needed. If the contacts are not moving when energized, then you will probably need to replace one or both of the contactors.
Posted on Jan 18, 2009
SOURCE: Spa Heater
You need to check your temp sensor and your high limit. Both are tubes that slide into the plumbing on or near your heater. If this is a tube heater then they are probally at on each end of the heater and will have small wires coming from them that go back to the control board. Farely common problem and easy enough to fix with replaceing them both. A number of models wire them together so they come as one part. Good luck.
Posted on Jan 20, 2010
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Thank you for posting your question here on Fixya.com.
Use a digital or analog multimeter to test the heater. Start with voltage to the element probes inside the control box. They will protrude from the S.S. pipe into the control area. Confirm you have 230VAC line to line and then confirm 115VAC from each post to ground. Any variation of more than 10% from those numbers would suggest you have electrical issues.
If you have acceptable voltage to the element and it still will not heat turn all the power off and disconnect one of the line leads from the element post. Use the lowest ohm scale on the meter to measure resistance across the element. A typical reading is somewhere around 10 - 15 ohms...a very low resistance reading. Anything above 20 indicates problems with the element. What you will likely find is an element with infinite or some other reading WAY higher than even 20 ohms. Replacing an electric heater element in a spa heater is a fairly typical repair.
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