Rinnai EHP-WH110, User'S And Installer'S Manual

Page: 36 / 48

36
4.5.5 Defrosting cycle
Especially when the unit works when the outside temperature is very low, frost may appear on the evaporator. In this
case the defrost process is activated and the relative LED icon flashes.
4.5.6 Anti-freeze protection
If the unit is switched off but still under voltage, and the tank temperature drops below 5°C; the electric heater is forced
to work until reaching the same temperature at 10°C. In this case the error code “P06” will appear on the display of
the unit.
4.6 PARAMETERS’ CONTROL AND SETTING
The parameters can be displayed on the screen. Certain user/installer parameters can be changed directly, while the
others can be displayed but only authorized technicians can access with password to to modify them. Below is given
the list of the parameters.
Once the parameters have been set by the installer, it is not recommended for the user to modify
them. Please contact a qualified person for modifying the setting values of the parameters.
Parameter nr. Description Range Default Notes
A Lower tank temperature sensor -20 ~ 99°C
In case of lower tank temp. sensor failure, the error code
“P01” will be displayed.
B Upper tank temperature sensor -20 ~ 99°C
In case of upper tank temp. sensor failure, the error code
“P02” will be displayed.
C Evaporation temperature sensor -20 ~ 99°C
In case of evaporation temp. sensor failure, the error code
“P03” will be displayed.
D Compressor suction temperature sensor -20 ~ 99°C
In case of compressor suction temperature sensor failure,
the error code “P04” will be displayed.
E Room temperature sensor -20 ~ 99°C
In case of room temperature sensor failure, the error code
“P05” will be displayed.
F EXV open steps 100 ~ 470 step Not adjustable.
01
ΔT compared to the compressor restart setting
temperature.
2 ~ 15°C 5°C Adjustable
02 Reserved
03 Reserved
04 Weekly disinfection temperature 50 ~ 70°C 70°C Only technician of “TAC” can change it.
05 Holding time of the disinfection temperature 0 ~ 90 min 30 min Only technician of “TAC” can change it.
06 Defrosting cycle time duration 30~90 min 45 min Only technician of “TAC” can change it.
07
Outside temperature of defrost cycle
initialization
-30 ~ 0°C -7°C Only technician of “TAC” can change it.
08 Defrosting termination temperature 2 ~ 30°C 20°C Only technician of “TAC” can change it.
09 Maximum defrosting cycle time 1 ~ 12 min 8 min Only technician of “TAC” can change it.
10
Operating mode of the electronic expansion
valve.
0 (auto)
1 (manual)
0 Only technician of “TAC” can change it.
11 Superheat setting value -9 ~ 9°C 5°C Only technician of “TAC” can change it.
12
Steps for manual adjustment of the electronic
expansion valve
10 ~ 47 step 35 step Only technician of “TAC” can change it (N*10)
13 Time to start a disinfection cycle 0~23 23 Adjustable (hours)
14 ΔT for electric heater initialization 2 ~ 20°C 7°C Adjustable
15 Compressor cumulative operation Time 10 ~ 80 min 30 min Only technician of “TAC” can change it.
16 Increase of the lower tank temperature 0 ~ 20°C 2°C Only technician of “TAC” can change it.
17 ON/OFF
0 (From remote
signal)
1 (from
photovoltaic
system)
0 Adjustable
18 Room temperature update period. 2 – 120 min 15 min Adjustable
19
Compensation temperature for the climatic
curve.
-10 – 10 °C 0 °C Adjustable
20 Type of temperature set control.
0 (set by TS1) –
1 (65°C)
0 Adjustable