Toshiba HWT-1101XWHT9W-E User Manual

98
8-3-4. How to diagnose by error code
Defect mode detected by the Hydro Unit
O ... Possible
× .... Not possible
Check
code
Diagnostic functional operation
Determination and action
Number of
abnormalities
for
confirmation
Detailed
item
Operational cause
Backup
operation
Automatic
reset
A01
Flowing quantity error
Detected by flow rate abnormality
Heating
×
Hot water
O
×
1. Almost no or little water flow.
• Not enough vent air
• Dirt clogging in the water piping
system.
• The water piping is too long.
• Installation of buffer tank and
secondary pump
8106
A02
Temperature increase error (heating)
When one of the TWI, TWO and THO
sensors exceeds 70°C.
Heating
×
Hot water
O
O
1. Check the water inlet, water outlet
and heater outlet (TWI, TWO, THO)
sensors.
2. Defect of the backup heater (defect
automatic reset thermostat).
1107
A03
Temperature increase error (hot water
supply)
When the TTW sensor exceeds 85°C.
Heating
O
Hot water
×
O
1. Check the hot water cylinder sensor
(TTW).
2. Check the hot water cylinder thermal
cut-out.
1108
A04
Antifreeze operation (1)
1)TWO > 20°C condition:
2 × TC + TWO ≤ -12°C is detected.
2)TWO ≤ 20°C condition:
TC + TWO ≤ 4°C is detected.
3)TWI ≤ 15°C is detected during
defrosting.
O
×
1. Almost no or little water flow.
• Dirt clogging in the water piping
system.
• The water piping is too long, or too
short.
2. Check the heater power circuit.
• Power supply voltage, breaker,
power supply connection
3. Set the presence of the backup
heater.
4. Check the water inlet, water outlet
and heat exchange (TWI, TWO, TC)
sensors and flow sensor.
Heating 8
Hot water 8
Cooling 4
109
A05
Piping antifreeze operation
Activating the heater under the condition
of TWO < 4 or TWI < 4 or THO < 4 does
not achieve TWO, TWI, THO ≥ 5°C after
30 min elapsed.
OO
1. Check the heater power circuit.
• Power supply voltage, breaker,
power supply connection
2. Check the water inlet, water outlet
and heater outlet sensors (TWI,
TWO, THO).
3. Disconnection of the backup heater.
1110
A08
Low pressure sensor operation error
The low pressure sensor detected
0.2 MPa or less.
O
×
1. Almost no or little water flow.
2. Defect of the flow sensor.
3. On-load cooling or prolonged
defrosting (a lot of frost formation)
under the above conditions.
4. Defect in the low pressure sensor.
5. Check the refrigeration cycle (gas
leak)
8111

Toshiba HWT-1101XWHT9W-E Specifications

General

Brand	Toshiba
Model	HWT-1101XWHT9W-E
Category	Heat Pump
Language	English