Electric Hot Water Heaters - Danfoss Heat Pump Troubleshooting Manual

Troubleshooting Guide
Water does not get hot
Action:
Check fuse(s).
Check if there is cold water supply, if not, check why and rectify the fault.
Check if the overheat protection has tripped, reset by pressing the button until it clicks.
Extremely long heating time
Action:
Check fuses so that all are intact at heaters with two phases or three phases. If not change fuse(s).
Clean coils or replace electric heating element / shield
The heater is hot but no hot water comes out of it
Action:
Check if the mixing valve is defective, remedy or replace.
Check if there is cold water supply, if not, check why and rectify the fault.
The safety valve leaks
Action:
It is completely normal, but if it leaks the whole time at a cold heater, replace the safety valve.
Water runs from the heater
Action:
Check where the water comes from
Replace the gasket or O-ring at leakage from couplings
Replace the electric heating element in event of leakage in the electric heating element
Replace the water heater if there is a hole in the water heater

Electric hot water heaters

VMIFB202
33