Danfoss DTW 300 SP, Installation, Service And User Manual

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TEMP-SET
Displaying the error code and water temperature setting alternatively.
If the system is in ECONOMY mode and a malfunction occurs, the system can still be operational by switching to E-
HEATER mode, even though it could not reach the expected efficiency. Contact your supplier for help.
DANGER! The heat pump cover must only be opened by authorised service technicians.
Table 4. Error Codes
Error
code Description Error
code Description
E0 Error of sensor T5U P1 System high pressure protection
E1 Error of sensor T5L P2 Discharge pipe high temperature protection
E2 Tank and Wired Controller communica-
tion error
P3 Compressor not running
E4 Evaporator pipe temperature sensor error P4 Compressor overload protection
E5 Ambient temperature sensor error P8 Malfunction of electrical heater
E6 Discharge pipe temperature sensor error P9 E-heater overload protection
E7 System error
E8 Electrical leakage protection
E9 TH sensor condenser failure
LA Ambient temperature is not fit for heat
pumps. Change mode to E-heater mode
to continue operation.
If any of the above error codes occur, call for service.
11.4 Operating Capability
11.4.1 Water heating operating capability
The following heating elements are included in the unit,
•
A heat pump
•
An electrical heater
•
A solar coil
These three heating elements cannot work together simultaneously.
The unit has two tank temperature sensors, one is installed at the upper part of the tank (35) and the other at the
bottom (36). See Figure 16. Heating elements Page 30. The upper one measures the upper temperature in the
Installation, Service and User Manual VMGFK202 – 29