Toshiba A09-01P manual Alarm Indications, Quick Reference Guide - Page, indication

Quick Reference Guide - Page 29

Alarm Indications

Alarm	Alarm description and generation/reset conditions
indication
	Regular communication error between hydro unit and remote controller (system controller) If there is no
E03	regular communication from the remote controller for three minutes, the hydro unit regards it as no
	remote controller. If there is no communication from both sides, alarm E03 occurs. Auto-reset: When
	successful regular communication is made
	Regular communication error between hydro unit and outdoor unit When serial signal from the outdoor
	unit cannot be received though normal serial signal is sent to the outdoor unit 1) When serial signal
E04	cannot be received continuously for 60 seconds (S code communication) 2) Communication is still not
	successful for 80 seconds through three retries if serial signal cannot be received for 20 seconds after
	new communication (f code) starts When the remote controller starts operation, serial transmission
	starts with the new communication format. Auto-reset: When successful regular communication is
	made
	Condensing temperature TC sensor defect
F03	If short-circuit or open-circuit state continues for two seconds, an alarm occurs.
	Auto-reset: When normal value is confirmed
	Hydraulic heat exchanger inlet temperature TWI sensor defect
F10	If short-circuit or open-circuit state continues for two seconds, an alarm occurs.
	Auto-reset: When normal value is confirmed
	Hydraulic heat exchanger outlet temperature TWO sensor defect
F11	If short-circuit or open-circuit state continues for two seconds, an alarm occurs.
	Auto-reset: When normal value is confirmed
	Hot water cylinder temperature TTW sensor defect
F14	If short-circuit or open-circuit state continues for two seconds, an alarm occurs.
	Auto-reset: When normal value is confirmed
	Floor inlet temperature TFI sensor defect
F17	If short-circuit or open-circuit state continues for two seconds, an alarm occurs.
	Auto-reset: When normal value is confirmed
	Internal heater outlet temperature TWO sensor defect
F18	If short-circuit or open-circuit state continues for two seconds, an alarm occurs.
	Auto-reset: When normal value is confirmed
	Low-pressure sensor defect
F23	If open-circuit state continues for two seconds, an alarm occurs.
	Auto-reset: When normal value is confirmed
	Hydraulic heat exchanger EEPROM defect
F29	One mismatch is detected if there is no verification ACK after data write to the EEPROM Reset
	condition: This alarm is inhibited while the unit is not working.
	(When EEPROM1K is mounted, this alarm cannot be reset.)
F20	Floor inlet temperature TFI sensor disconnection or wrong installation (This alarm is reset by stopping
	operation and is checked again.)
F30	Onboard expansion IC defect This alarm is not reset automatically.
	Group line in an hydro unit
	This alarm is checked during initial communication immediately after power-on. This alarm occurs
L07	immediately after operation start.
	This alarm is not reset automatically. (This alarm is inhibited while the unit is not working, but occurs
	again after the unit operates.)
L09	Hydro unit capacity has not been set.
	This alarm is checked immediately after power-on. This alarm is not reset automatically. (This alarm is
	inhibited while the unit is not working, but occurs again after the unit operates.)
A01	Pump defect or abnormal flow rate This alarm is not reset automatically.
A02	Excessive water temperature increase by the heating heater Auto-reset:
A03	Excessive water temperature increase in the hot water cylinder
A04	Freezing is detected. Auto-reset:
A07	High-pressure switch malfunction This alarm is not reset automatically.
A08	Low-pressure sensor malfunction This alarm is not reset automatically.