Toshiba A09-01P manual Sensor Temperature Monitoring Function, Fault Symptoms, Code No, Location

Quick Reference Guide - Page 28

Sensor Temperature Monitoring Function

The sensor sensing temperature is displayed on the remote controller. This function allows you to make sure whether the sensor is installed properly.

1)Press the TEST + CL buttons for four seconds or more.

2)Select the Code No. with the TEMP. buttons.

3)Press the TEST button to exit the test mode.

Code No.	Location	Indication
06		Return water temperature °C
08		Hot water temperature °C
09	Hydro unit	2-zone sensor temperature °C
0A		Hot water cylinder temperature sensor °C
0B		Motorized mixing valve position
60		Heat exchanger temperature °C
61		Outside air temperature °C
62	Outdoor unit	Refrigerant discharge temperature °C
63		Refrigerant intake temperature °C
6A		Current value (in the inverter) A
70		Compressor operating frequency
F4		Hydro unit AC pump total operating hours x100 hours
F5	Operating hours	Hot water cylinder heater total operating hours x100 hours
F6		Hydro unit heater total operating hours x100 hours

Fault Symptoms

Symptom	Possible cause
	Incorrect remote controller setting
Room is not heated or	Incorrect function code setting
cooled. Water is not hot	Backup heater disconnected
enough.
	Insufficient capacity
	Sensor defect
Nothing is displayed on	Power is not supplied.
the remote controller.	Incorrect setting
	Air bite in the pump
Flow rate switch is	Low hydraulic pressure
activated. Error code	Strainer is clogged.
[A01]
	Large resistance on the hydro side
	Malfunction of motorized 3-way
	valve for hot water supply
	Excessive hydraulic pressure
Hot water leaks from
	Insufficient capacity of expansion
pressure relief valve.
	tank
	Expansion tank failure

Corrective action

Check remote controller operation and temperature setting

Check function code setting with the function code table.

Check backup heater and bimetal thermostat. Check selection of equipment.

Check whether temperature sensor is installed at the normal position.

Check power supply wiring.

Check DIP switch setting on the Hydro Unit board. Check the setting with the function code table.

Release air completely according to the procedure.

Set hydraulic pressure considering pipe height, and replenish water until manometer shows a value of set hydraulic pressure or more.

Clean the strainer.

Widen water path to the hydro unit or adopt a bypass valve.

Check wiring and parts.

Set hydraulic pressure considering pipe height, and replenish water until manometer shows a value of set hydraulic pressure or more.

Check expansion tank capacity compared to total water amount. If it is insufficient, install another expansion tank.

Check the air pressure.