Outdoor Ambient Thermo Off Control; Alternative Outdoor Ambient Sensor Control - Panasonic WH-ADC0309H3E Service Manual

12.13 Outdoor Ambient Thermo OFF Control


Purpose:
Stop provides heating to room side during high outdoor ambient condition.
o
Outdoor thermo off set
temperature + 3°C

Control content:
Heating outdoor ambient thermos OFF control only applicable when heat pump operate in heat mode. (This
o
control will not activate when running in tank side)
Heat pump and water pump will turn OFF when outdoor ambient is higher than outdoor thermo OFF set
o
temperature.
Heat pump thermos ON when outdoor ambient < outdoor thermos OFF set temperature + 1°C.
o

12.14 Alternative Outdoor Ambient Sensor Control

Purpose of the Alternative Outdoor Ambient Sensor:

It is some possibility that the air to water heat pump unit will install at a location where the original ambient sensor
is expose to direct sunlight. Therefore, another optional ambient sensor can be connect to indoor PCB and locate
at new and better reading location to improve the heat pump performance.
Control Detail:

Remocon can select either the extra outdoor ambient sensor is connected or not. (YES/NO)

The alternative outdoor ambient sensor will connect to indoor unit main PCB terminal.
when alternative sensor select NO
o
 Original Outdoor temperature sensor will use for Indoor & Outdoor heat pump operation reference
sensor.
 Data communication direction : OUTDOOR send outdoor temperature reading to INDOOR.
 Error judge : OUTDOOR will judge the original outdoor sensor error (F36 display if error detect). No
judge error on alternative outdoor sensor
when alternative sensor select YES
o
 Alternative Outdoor temperature sensor will use for Indoor & Outdoor heat pump operation reference
sensor.
 Data communication direction : INDOOR send outdoor temperature reading to OUTDOOR.
 Error judge : INDOOR will judge the Extra outdoor sensor error only after operation ON request received
from remocon.
(F36 display if error detect). No judge error on original outdoor sensor.
OFF
Outdoor thermo off set temperature +
ON
1°C
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