Toshiba ESTIA HWS-1501CSHM3-E, Service Manual

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9-5. Operation check by PC board switch
9-5-1. Operation check mode
This mode allows to check the operations of the water 2-way valve, water 3-way valve, mixing valve, and circulating
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 controls "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 SW06_2 "ON".
(2) Operation check
1) Turn on the hydro unit and the outdoor unit.
2) Rotate switch DIP SW01 to position "1" and press tactile switch SW07 for 5 sec. or longer.
3) Rotating the rotary SW01 allows to check each operation.
4) Set the DIP SW06_2 "OFF" to finish.
Rotary
switch
Check contents Remark
1 None
2
2WV_W Alive for approx. 2 sec, not alive for 3
sec
3 3WV_W
4
Mixing valve Alive for 30 sec in the forward direction
Alive for 30 sec in the reverse direction
5 Built-in AC pump Alive / not alive for 20 sec
6 Extended AC pump 1 Alive / not alive for 20 sec
7 (Extended AC pump 2) Alive / not alive for 20 sec Reserved
8
Water heat exchange backup
heater
Repeat heater 1, heater 2, and OFF
every 20 sec
The built-in AC pump operates.
9 Hot water cylinder heater Alive / not alive for 10 sec
10
Backup heater Alive / not alive for 10 sec The built-in AC pump and external AC pump
operate.
11 Check the alarm output. Output for 10 sec / no output for 10 sec
12 Check the boiler output. Output for 10 sec / no output for 10 sec
13 Check the defrost output. Output for 10 sec / no output for 10 sec
14 Check the operation output. Output for 10 sec / no output for 10 sec
15 None
16
Built-in AC pump continuous
operation
Continuously alive Do not operate the AC pump alive
continuously without any water in hydro unit.