Tempra or Tempra Plus water heaters might experience no hot water, fluctuating temperatures, low pressure, error codes, or leaks. Simple fixes include checking circuit breakers, descaling, bleeding air from pipes, and cleaning the inlet filter. For error codes, consult the manual or contact Stiebel Eltron support.
If you’re not getting any hot water, start by checking your circuit breakers to ensure they haven’t tripped. If the breakers are fine, check the flow sensor – it may be clogged and need cleaning.
Inconsistent water temperature can often be attributed to low flow rate or air in the pipes. Try increasing the flow rate and bleeding the air out of the pipes. If that doesn’t work, the heating elements might need to be descaled.
A flashing power light usually indicates that the water flow rate is too high. Simply reduce the flow rate until the light stops flashing. For any other issues, consult your user manual or contact Stiebel Eltron’s customer service for assistance.
Remember, always turn off the power to your water heater before attempting any repairs.
Common Problems with Tempra or Tempra Plus Water Heater & Their Fixes
Stiebel Eltron Tempra and Tempra Plus water heaters are renowned for their efficient and eco-friendly operation. Like any appliance, however, they can encounter occasional hiccups. Let’s delve into five common issues and their remedies.
No Hot Water
Possible Cause:
Tripped Circuit Breaker or Blown Fuse: Electrical issues like a tripped circuit breaker or blown fuse can cut off power to the unit, resulting in no hot water.
Solution:
Check and Reset: Locate your electrical panel and check if the circuit breaker has tripped or if a fuse has blown. Reset the breaker or replace the fuse.
Possible Cause:
Insufficient Water Flow: Tankless water heaters require a minimum flow rate to activate. If the flow is too low, the unit may not heat the water.
Solution:
Check Water Supply: Ensure that the water supply valves are fully open and there are no blockages or leaks in the plumbing.
Fluctuating Water Temperature
Possible Cause:
Air in the Lines: Air trapped in the water lines can cause temperature inconsistencies as the heater struggles to maintain a steady flow.
Solution:
Bleed the Lines: Open a hot water faucet farthest from the heater and let it run for a few minutes until the water flow becomes smooth and consistent.
Possible Cause:
Scale Buildup: Mineral deposits can accumulate inside the heater over time, hindering heat transfer and causing temperature fluctuations.
Solution:
Descale the Unit: Flush the heater with a descaling solution according to the manufacturer’s instructions. This process removes mineral buildup and restores optimal performance.
Low Hot Water Pressure
Possible Cause:
Clogged Inlet Filter: Debris or sediment in the water supply can clog the inlet filter, restricting water flow and reducing pressure.
Solution:
Clean the Filter: Turn off the water supply, unscrew the inlet filter, and clean it with a soft brush.
Error Codes
Possible Cause:
Malfunction: Various error codes displayed on the unit’s panel indicate specific malfunctions within the heater.
Solution:
Consult the Manual or Contact Support: Refer to the user manual to decipher the error code and troubleshoot accordingly. If the issue persists, contact Stiebel Eltron’s customer support for assistance.
Leaks
Possible Cause:
Loose Connections or Worn Components: Leaks can occur due to loose connections or worn-out seals and gaskets within the unit.
Solution:
Tighten Connections or Replace Parts: Carefully inspect all connections and tighten any loose fittings. If you identify worn or damaged parts, replace them.
FAQs
1. Why does my Tempra Plus make a humming noise?
A humming noise from your Tempra Plus is usually normal. It’s the sound of the heating elements working to heat the water. However, if the noise is excessively loud or accompanied by other symptoms like a burning smell, it could indicate a problem with the heating element or electrical connections. In this case, it’s best to turn off the power and contact a qualified electrician for assistance.
2. How often should I descale my Tempra water heater?
The frequency of descaling depends on the hardness of your water. If you have hard water with high mineral content, you might need to descale your Tempra every 6-12 months. With soft water, descaling may only be necessary every few years. If you notice a decrease in hot water output or inconsistent temperatures, it’s a good indicator that descaling is needed.
3. Can I install a Tempra Plus myself?
While it’s technically possible to install a Tempra Plus yourself, it’s strongly recommended to hire a licensed electrician. Tankless water heaters require specific electrical connections and plumbing configurations, and improper installation can void the warranty and lead to safety hazards.
4. What is the lifespan of a Tempra or Tempra Plus water heater?
With proper installation and maintenance, a Tempra or Tempra Plus water heater can last for 20 years or more. Regular descaling and prompt attention to any issues can significantly extend the lifespan of your unit.
5. Can I use a Tempra or Tempra Plus water heater for radiant floor heating?
Yes, Tempra and Tempra Plus water heaters can be used for radiant floor heating systems. However, it’s important to consult with a professional to ensure proper sizing and installation. The flow rate and temperature requirements for radiant heating might differ from those for domestic hot water use.
