Question about Stiebel Eltron 3-2 Tankless Electric Water Heater
I push the reset butom and there's hot water, but about a minute later, hot water stops flowing. If I want hot water, I have to reset it over and over again.Sistem turns off ahortly after I reset it. I have to reset it to have hot water.
Inadequate Hot Water
•Unit is undersized for water heating demands
•Broken or damaged dip tube allowing cold and hot water to mix in tank
•Faulty plumbing installation has crossed cold and hot water connections
•Faulty electric lower heating element or high or low heating element thermostat
•Make sure water heater is not being overtaxed by hot water supply demands. The water heater should have 75% of its capacity as hot water (e.g., a 40 gallon WH should be used for a demand of 30 gallons). To determine required capacity see Calculating Fixture Flow Rates.
•Undo cold water inlet and pipe nipple and remove dip tube. Check condition and replace if required.
•Check for crossed connection by turning off water supply to water heater. Open hot water tap at a faucet. If there is water flow, then the a cross connection exists somewhere. Check for a hot water line connected to a cold water connection on the water heater or appliances such as washer, dishwasher, faucet or shower valves.
•Check for power and electrical continuity at the lower heating element. Replace if needed but clear tank of any sediment first.
•If element tests OK, check for power at upper electrical upper thermostat. If OK check lower thermostat. Replace if necessary.
Not Enough Hot Water:
Thermostat set too low - Increase thermostat setting not to exceed 120 degrees
Defective lower element - Check and replace
Defective lower thermostat or miswired thermostat - Check and replace
Scale formation on heating element Check elements - clean or replace
Poor grounding of tank - Check grounding and tighten
Heater is undersized - Resize residence and compare
Damaged dip tube - Check and replace
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Posted on May 14, 2009
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Posted on Jan 02, 2017
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