Toshiba HWT-601XWHT6W-E - 8-5.Operation Check by PC Board Switch; 8-5-1.Operation Check Mode

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8-5. Operation check by PC board switch
8-5-1. Operation check mode
This mode allows to check the operations of the water 2-way valve, water 3-way valve, mixing valve, and circulation
pump. This operation is valid when the hydro unit and the outdoor unit are turned on the power.
Operation check mode
(1) Preparation
1) Turn all of the remote controllers “OFF” for the hot water supply and heating.
2) Turn off the hydro unit and the outdoor unit.
3) Remove the front panel of the hydro unit.
4) Set DIP_SW705_3 “ON”.
(2) Operation check
1) Turn on the hydro unit and the outdoor unit.
2) Rotate the rotary SW700 to position "0" and press tactile switch SW703 for 5 sec. or longer.
3) Rotating the rotary SW700 allows to check each operation.
4) Set the DIP_SW705_3 “OFF” to finish.
Rotary
switch
Check contents Remark
0None OP.CH
1
2WV_W Alive for approx. 2 sec, not alive for 3
sec
2.ON ↔ 2.OFF
2
3WV_W Alive for 4 min in the heating / cooling
direction
Alive for 4 min in the hot water direction
7 segment display
ON → heating, OFF → hot water
3.ON ↔ 3.OFF
3
Mixing valve Alive for 30 sec in the forward direction
Alive for 30 sec in the reverse direction
F.ON ↔ F.OFF
4 Built-in circulation pump Alive / not alive for 20 sec P.ON ↔ P.OFF
5 External circulation pump 2 Alive / not alive for 20 sec P2.ON ↔ P2.OFF
6None
7
Water heat exchange backup
heater
Repeat heater 1, heater 2, and OFF
every 20 sec
The built-in circulation pump operates.
H.ON ↔ H.OFF
8 Hot water cylinder heater Alive / not alive for 20 sec dH.ON ↔ dH.OFF
9
Booster heater Alive / not alive for 20 sec The built-in circulation pump and external
circulation pump operate.
bH.ON ↔ bH.OFF
A Check the alarm output. Output for 20 sec / no output for 20 sec 01.ON ↔ 01.OFF
B Check the boiler output. Output for 20 sec / no output for 20 sec 02.ON ↔ 02.OFF
C Check the defrost output. Output for 20 sec / no output for 20 sec 03.ON ↔ 03.OFF
D Check the operation output. Output for 20 sec / no output for 20 sec 04.ON ↔ 04.OFF
ENone
F
Built-in circulation pump
continuous operation
Continuously alive Do not operate the circulation pump alive
continuously without any water in hydro unit.
P1.ON ↔ Flow rate display