LG R5TT20F-SA1 Engineering Product Data Book page 46

Heat Pump Water Heater
. Troubleshooting
18
Problem
Noise
Drips from the
outside of the heater
Noise and drips
from relief valve
Water pressure is
low
Trouble connecting
appliance and
smartphone to
Wi-Fi network.
45
- 50 Hz ( R134a)
Possible Causes & Corrective Action
The heat pump compressor, fan, or EEV valve is running
• This is norma
Build up of scale or lime deposits on heating elements may cause
rumbling noise
• Clean or replace the h ating elements.
This should only be performed by qualified service person.
Call our Technical Support Center.
Condensate drain is blocked
• Clean the drain port an remove the debris.
Hot/Cold water connections or other parts have loosened
• ighten the loose connections. This should only be done by a qualified
service person.
Pressure build-up due to thermal expansion in a closed water system.
• This is an unacceptable condition and must be corrected. Do ot plug the
T&P relief valve outlet. Contact a plumbing contractor to correct this.
Supply valve is partially closed
• Open the water heat r's supply valve fully.
The password for the Wi-Fi network was entered incorrectly.
• Delete your home Wi-Fi network and begin the registration proces
again.
Mobile data for your smartphone is turned on.
• urn off the Mobile data on your smartphone before registering the
appliance.
The wireless network name (SSID) is set incorrectly.
• The wireless network name (SSID) should be a combination of Englis
letters and numbers. (Do not use special characters.)
The router frequency is not 2.4 GHz.
• Only a 2.4 GHz router frequency is supported. Set the wireless route
to 2.4 GHz and connect the appliance to the wireless router. To check
the router frequency, check with your Internet service provider or the
router manufacturer.
The distance between the appliance and the router is too far.
• If the appliance is too far from the route , the signal may be weak and
the connection may not be router closer to the appliance or purchase
and install a Wi-Fi repeater.