Panasonic WH-UD09HE8, Service Manual

Page: 139 / 241

139
12.28 Holiday Mode

Purpose:
Promotes energy saving by allowing the user to stop the system during holiday and enables the system to
resume at the preset temperature after holiday.

Control details:
o
Indoor operate the unit according running mode request. Target temperature will follow holiday setting
temperature.
-
If heat mode request is receive, Target Water Out Temperature will change according to holiday shift
temperature set.
[If heat is set OFF at holiday, unit, water pump and zone control will OFF]
-
If tank mode request is receive, Target Tank Set Temperature will change according to the holiday
tank shift temperature set.
[If tank is set OFF at holiday, heat pump and tank heater will OFF]
o
After days of holiday have been set, heat pump will stop and only resume operation at the end of holiday
countdown.

Start condition:
o
Holiday timer set and the holiday timer start
* The day holiday mode was set is counted as day 1.

Stop condition:
o
OFF/ON button is pressed.
o
Holiday timer is reached.
12.29 Dry Concrete

Purpose:
Provide heat to floor heating panel and dry the wet concrete during installation.

Setting condition:
o
Dry concrete parameter can be set through remote control under system setup.
o
Parameters are possible to set up to 99 days with different target set temperature

Control details:
o
Dry concrete mode will be activates when select ON from service setup.
o
Once start dry concrete function, remote control will send step 1 setting temperature to indoor unit.
* This temperature is set at zone temperature. If system is 2 zones, both zone target temperature is set
as same temperature.
o
Heat pump will start heat mode operation to room side with received target water outlet temperature.
* Heat pump will operate according to Heat pump Target Water Temperature.
o
After complete day 1 setup operation, day 2 data will be send to indoor at 12.00am on the second day.
o
Each preset data will be send every day until dry concrete mode is complete, unit will turns OFF and exit
dry concrete function.
o
3 ways valve and booster heater will turn OFF and 2 ways valve will turns ON.

Cancel condition:
o
Dry concrete mode is complete and OFF signal is received.
o
OFF signal is received by pressing OFF/ON button.
12.30 Flow Sensor

The water flow sensor serves as an overload protector that shuts down the unit when the water level is detected
to be low.

Abnormal flow detection:
Sequence Abnormal flow Normal flow
Normal case Flow rate < 11 l/min or ≥ 69 l/min ≥ 11 l/min
During status 2~6 on Anti-freeze deice Flow rate ≥ 11 l/min < 11 l/min