Hygger Aquarium Heater Troubleshooting Fix

Aquarium heater helps to maintain warm and stable water temperature, which is critically crucial for tanks, like tropical fish tanks. In our guide below, we will cover common troubleshooting of hygger aquarium heaters, along with how to repair the heater and how to set a heater’s temperature. After reading, you will know more about aquarium heater fixes.

• Content Table

• Common troubleshooting of aquarium heaters
• How to repair an aquarium heater
• How to set an aquarium heater’s temperature
• Reminder

Common troubleshooting of aquarium heaters

To begin with, we will list the common troubleshooting of aquarium heaters:

• Improper placement
• Excess temperature
• Too low temperature
• Temperature difference
• Over voltage fault
• Sensor fault
• Components fault

Besides that, sometimes you may be confused about the error codes. Consequently, next, we will share some specific examples.

1.001 Submersible Aquarium Heater

Error code	Causes
E1	The aquarium heater is exposed to the air
HH	The water temperature is above 95℉
EE	There is a 5° temperature difference detected by the two sensors
E4	Over voltage fault
H1 H2 E2 E3	The temperature sensor is short-circuited protection

2.003 Variable Frequency Aquarium Heater

Error code	Causes
LL	No.1 temperature sensor fault
HH	No.2 temperature sensor fault
E1	The heater is out of water
E2	The heater is placed somewhere with bad water recycle Components fault
E3	The heater is placed somewhere with bad water recycle Components fault
E4	Flat power grid interference

3.007 Quartz Submersible Aquarium Heater

Error code	Causes
E1	The aquarium heater is exposed to the air
HH	The water temperature is above 95℉
EE	There is a 5° temperature difference detected by the two sensors
H4	Over voltage fault
H1 H2 E2 E3	The temperature sensor is short-circuited protection

4.011 Smart Aquarium Heater

Error code	Causes
Er & beeping	The heater is out of water/Sensor fault
Water temperature flashing & beeping	The water temperature is above 96.8℉ & poor water circulation or improper placement of the heater
Ec	Components fault
E3	Relay fault
H1/H2	Temperature sensor fault
White or yellow dirt adheres	Incrustation scale

 5.045 Tiny Titan Water Heater

Error code	Causes
Er	The heater is out of water
EE flash	The temperature is above 95℉
The heater turns red indication when it is out of water	Failure of the out water shutoff function
The heater is working but can not reach the setup temperature	The ambient temperature is below 50℉
H1	Probe is broken
H2	Probe is broken
E1	Probe is broken
E2	Probe is broken
E8	Probe is broken
EL	Reminder after 10,000 hours of use

6.060 Ultra Short Aquarium Quartz Heater

Error code	Causes
LL	The temperature is lower than 59℉ (15℃)
HH	The temperature reaches 95℉ (35℃)
EE	Sensor fault
L1	The heater is out of the water and exposed to air

7.921 Aquarium Water Heater

Error code	Causes
ER	The heater is exposed to air
EE	Water temp exceeds about 97°F
H1	Temp sensor one is short-circuited protection
H2	Temp sensor two is short-circuited protection
E1	Temp sensor one is open-circuit protection
E2	Temp sensor two is open-circuit protection
E3	The relay is melted

8.969 hygger aquarium heater

Error code	Causes
Er	The heater is exposed to air
EH	The water temperature is above 97℉
Ec	Communication failure
E3	The relay is melted
H1	Temp sensor is short-circuited protection

How to repair an aquarium heater

In this segment, we will list remedies for some common heater faults.

Faults	Solutions
The temperature is below the minimum level (too low temperature)	Increase the water/room temperature (e.g. add another aquarium heater/warm water for water changes/open heating fan/add an aquarium heating blanket)
The temperature reaches the maximum level (excess temperature)	Decrease the water/room temperature (e.g. open the air condition/open the cooling fan/add float ice packs in the water/avoid direct sunlight)
Sensor fault	Return the heater
The heater is exposed to air or out of the water (improper placement)	Fully submerge the heater in the water
5° temperature difference detected by sensors	Discard the heater
Over voltage fault	Discard the heater
The temperature sensor is short-circuited or open-circuit protection	Discard the heater
Several degrees of differences between the water temp and desired temp	Place the heater on the tank with great water circulation (e.g. the stream of a powerhead/the inlet or outlet of the aquarium filter/water pump)
Components fault	Check whether the water temp is over the maximum level or not. If it is above the maximum point, discard the heater.
Flat power grid interference	Restart
Relay fault	Re-plug in. If the heater can not restore, then discard it.
Incrustation scale	Rinse the heater with clean water

How to set an aquarium heater’s temperature

Additionally, how to set an aquarium heater’s temperature? Take a fully submersible heater as an example, you can set the desired temperature easily by pressing the “SET” button, and you can choose between 59 and 93℉. Provided that your set temp is 82℉, the heater will shut off automatically once the temp reaches the set point. Moreover, while heating, the light on the display will flash. And it will stop flashing once it reaches the set temp.

Reminder

If you want to get an aquarium heater, you should refer to the chart of the recommended tank and heater size, then you can choose the most suitable heater for your aquarium. Also, for safety during the cleaning process, you should unplug the heater first and leave it in the tank until it is cooled.

That’s all for today. For additional questions about hygger aquarium heaters, welcome to leave messages in the comment or contact us. We are happy to help you out. Finally, thanks for your time.