HTW SR24 Manuel De L'utilisateur Et D'installation page 54

Error phenomenon
Deviation of display from set temperature.
Reaching the temperature stopping hot
water is not enough.
The unit heats up for a period of time and
shows that the temperature has not risen.
Displayed temperature after sterilization
Deviation from set temperature
6.5 Error code shooting table
Display
Eh0b Tank and LCD panel communication error.
EH00 Machine working parameters are abnormal.
Faulty communication between water tank and
EL01
outdoor unit
PH15 Leakage protection
EC54 Error of TP
EC53 Error of T4
EC52 Error of T3
EH5L Error of T5L
EH5U Error of T5U
Electric heating disconnection protection
EH5d
PHdH Dry burning protection
EC51 Abnormal operating parameters of the outdoor unit
PH23 Anti-freeze protection for refrigeration status
PH24 Anti-freeze protection for low-temperature conditions
EC72 DC fan out of phase
PC12 341 Voltage protection or MCE fault
When the unit reaches the temperature and stops, there may be a small deviation between the display
temperature and the set temperature, which is a normal phenomenon.
The use of the process in the set temperature is low, up to temperature shutdown after the display of the
amount of water may not be full grid, is a normal phenomenon, the unit can provide a certain amount of hot
water to use, if the user demand for hot water is more, it is recommended to raise the set temperature.
In the process of use, the unit heats up when the water tank shows that the water temperature has not risen,
you can pay attention to the amount of hot water to show whether the number of grids increased, if the
increase is due to the lower part of the more cold water into the unit mainly heats up the water temperature in
the lower part of the water temperature, the priority of the water tank under the temperature rise and the upper
part of the water tank does not have a significant increase in the phenomenon is normal.
● Sterilization is completed after a period of time, the current display temperature and the user set
temperature is not consistent with the normal phenomenon. It takes a long time for the water tank
temperature to decrease from 70℃ to the user setting temperature;
● Turn on the forced sterilization or automatic sterilization, the set temperature of the unit becomes 70 ℃ (once
effective). The sterilization symbol of the heating process lights up. After the water tank temperature
reaches 70℃ to complete the sterilization, the sterilization icon goes out.
Malfunction Description
Possible reason & Solution
Display
PC00 IPM module protection
PC01 Main control voltage protection
PC02 Compressor top temperature protection
PC03 System pressure protection or failure
PC04 Compressor feedback protection
PC08 Outdoor unit current protection
PC40 Outdoor main control & driver chip communication failure
PC43 Compressor phase failure protection
Compressor 0 speed protection
PC44
PC45 341PWM Synchronization Guarantee
PC46 Compressor stall protection
PC49 Compressor overcurrent protection
PC51 T2 high temperature protection
PC52
T2 low temperature protection
EC07 Outdoor unit fan stall protection
PH9b Over-temperature protection for water tanks
23
Malfunction Description