Panasonic WH-SDC03H3E5-1 / WH-SDC05H3E5-1 / WH-SDC07H3E5-1 / WH-SDC09H3E5-1 / WH-UD03HE5-1 / WH-UD05HE5-1 / WH-UD07HE5-1 / WH-UD09HE5-1 Simplified Service Manual ▷ View online
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Pool water pump stop condition
o Pool zone: Zone room request OFF OR
o Pool function is cancel
o Pool function is cancel
* Zone 1 & Zone 2 water pump need to turn OFF when antifreeze deice pump stop control activate and turn
ON back after the antifreeze deice pump stop control end under setting of "NO" buffer tank connection.
ON back after the antifreeze deice pump stop control end under setting of "NO" buffer tank connection.
Zone Pump Prohibit ON control:
Start
condition:
Zone 1 water temperature ≥ 75°C continuously for 5 minutes
*stop zone water pump operates if the zone water fulfilled.
*stop zone water pump operates if the zone water fulfilled.
Cancel
condition:
After 30 minutes from start condition fulfilled.
*zone water pump operates according to normal condition.
*zone water pump operates according to normal condition.
Zone Pump Control during Anti-Freeze
Zone pump control during Zone Anti-Freeze Control:
When Zone Anti-Freeze Flag=1, Zone Pump Turn ON.
When Zone Anti-Freeze Flag=0, Zone Pump Turn OFF.
Zone pump control during Indoor Anti-Freeze Control:
Zone pump control during Indoor Anti-Freeze Control:
Zone pump only ON/OFF if the Extension PCB connected and Buffer Tank select "NO" condition
When Indoor Anti-Freeze flag=1, Zone Pump Turn ON
When Indoor Anti-Freeze flag=0, Zone Pump Turn OFF
* Pool Water Pump will not affected by both Indoor anti-freeze control or zone anti-freeze control.
12.2.3 Water Pump Speed Feedback Error
Basically pump speed feedback is control by micon.
When pump speed is below low limit or over high limit for a few seconds, micon detect pump error and system is
stopped.
Error detection conditions:
o Detect abnormal water pump speed for continuous 10 secs.
o Current pump speed < 700 rpm or
o Current pump speed > 6000 rpm for 10 seconds.
o Current pump speed < 700 rpm or
o Current pump speed > 6000 rpm for 10 seconds.
Control
contents:
o When error occurs, water pump, heating and heater is stopped for 30 seconds then restart again (Retry control).
o When micon detect error again, system is stopped and error code [H20] is displayed at control panel.
o When micon detect error again, system is stopped and error code [H20] is displayed at control panel.
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12.3 Indoor Unit Safety
12.3.1 Indoor Unit Safety Control
1 When water pump is ON, the system will start checking flow switch status (ON/OFF).
2 If the flow switch ON for 10 seconds, the system will check on the water inlet temperature for 10 seconds.
2 If the flow switch ON for 10 seconds, the system will check on the water inlet temperature for 10 seconds.
If the water inlet temperature not exceeds 80°C, the water pump shall be continuously running with normal
mode.
If the water inlet temperature exceeds 80°C for continuously 10 seconds, the water pump will be OFF
immediately.
mode.
If the water inlet temperature exceeds 80°C for continuously 10 seconds, the water pump will be OFF
immediately.
3 After water pump OFF for more than 10 minutes, it will be ON back and the indoor unit safety control
checking is restarted.
YES
YES
YES
NO to normal mode
10s
Flow SW ON?
Pump ON
Pump OFF
>10 mins
Water In > 80°C for 10s
12.4 Auto Restart Control
1 When the power supply is cut off during the operation of Air-to-Water Heatpump, the compressor will
reoperate after power supply resumes.
12.5 Indication Panel
LED Operation
Color Green
Light ON
Operation ON
Light OFF
Operation OFF
Note:
If Operation LED is blinking, there is an abnormality operation occurs.
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12.6 Indoor Back-Up Heater Control
12.6.1 Indoor
Electric Heater Control
1 Normal Heating Mode
o Heater
On
condition:
a. Heater switch is ON
b. After Heatpump thermo ON for [30] mins
c. After water pump operate [9] mins
d. Outdoor air temperature < Outdoor set temperature for heater
e. When water outlet temperature < Water set temperature + [-4°C]
f. [20] minutes since previous Backup heater Off
b. After Heatpump thermo ON for [30] mins
c. After water pump operate [9] mins
d. Outdoor air temperature < Outdoor set temperature for heater
e. When water outlet temperature < Water set temperature + [-4°C]
f. [20] minutes since previous Backup heater Off
* When heatpump cannot operate due to error happens during normal operation, heater will go into
force mode automatic
* Heater need to operate during deice operation
o Heater Stop Condition:
a. When outdoor set temperature > outdoor set temperature + [+2°C] for continuous 15 secs OR
b. When water out temp> water set temperature + [-2°C] for continuous 15 secs OR
c. Heater switch is Off OR
d. Heatpump thermo-off or OFF condition
b. When water out temp> water set temperature + [-2°C] for continuous 15 secs OR
c. Heater switch is Off OR
d. Heatpump thermo-off or OFF condition
2 Force
Heater
Mode
o Heater
On
condition:
a. After water pump operate [9] mins
b. When water outlet temperature < water set temperature + [-4°C]
c. [20] minutes since previous Backup heater Off
b. When water outlet temperature < water set temperature + [-4°C]
c. [20] minutes since previous Backup heater Off
o Heater Stop condition
a. Force mode off OR
b. When water outlet temperature > water set temperature + [-2°C] for continuous 15 secs
b. When water outlet temperature > water set temperature + [-2°C] for continuous 15 secs
* Do not operate heater at the following situation
1 Water outlet temperature sensor, and water inlet sensor abnormal
2 Flow switch abnormal
3 Circulation pump stop condition
1 Water outlet temperature sensor, and water inlet sensor abnormal
2 Flow switch abnormal
3 Circulation pump stop condition
12.6.2 Room Heater Operation during Deice
Purpose:
To protect the indoor Heat Exchanger from ice forming and prevent heat exchanger plate breakage.
Control content:
Control content:
This Heater protection control will activate only if the backup heater is enable at custom setup by remote
controller. Once fulfil the start condition, room heater will turn ON together (base on max heater capacity
selection) and stop together if stop condition is fulfilled.
* If the heater is request to turn ON OLP feedback will be detected.
selection) and stop together if stop condition is fulfilled.
* If the heater is request to turn ON OLP feedback will be detected.
Starting conditions:
During normal deice operation 4~9
Water outlet temperature < 10°C or
Outdoor air temperature < -10°C or
Water inlet temperature < 27°C
Water inlet temperature < 27°C
Heater operates when 1 ~2 fulfilled OR When 1 and 3 ~ 4 is fulfilled.
However, this control does not relate to Heater ON/OFF button on remote control.
Stop condition:
When normal deice end or
Water outlet temperature > 45°C
However, room heater keeps ON if indoor electric heater control activate.
However, room heater keeps ON if indoor electric heater control activate.
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12.7 Tank Heater Control
12.7.1 Tank Heater Remote Control Setting
1 Tank heater selection:
External: - Booster Heater use to heat up tank when select external
Internal: - Backup Heater use to heat up tank when select internal
Internal: - Backup Heater use to heat up tank when select internal
* When select External Tank Heater, Heater Delay ON Timer need to set. (range 20 min ~ 3 hrs)
2 Tank Heater ON/OFF selection by user.
The remote control Tank set Temperature range will change according to the External and Internal Tank Heater use.
Tank Heater Selection
Range
External
40 ~ 75°C
Internal
40 ~ 65°C
12.7.2 Internal Heater Control at Tank Mode
Internal heater turn On condition:
1 Internal Heater select for Tank heater by remote controller
2 Tank Heater select ON by user.
3 Backup Heater Enable
4 Tank Temperature < Tank Set Temperature
5 Heat Pump Thermo OFF
6 20 minutes from previous heater off.
2 Tank Heater select ON by user.
3 Backup Heater Enable
4 Tank Temperature < Tank Set Temperature
5 Heat Pump Thermo OFF
6 20 minutes from previous heater off.
Room heater turn OFF condition:
1 Tank Temperature > Tank Set Temperature + [0°C] for continuous 15 seconds. OR
2 Heat Pump Thermo ON OR
3 Mode Change or Operation OFF by remote controller OR
2 Heat Pump Thermo ON OR
3 Mode Change or Operation OFF by remote controller OR
* Backup Heater Turn ON/OFF all together according to the selected heater capacity.
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