8-5.Operation Check By Pc Board Switch; 8-5-1.Operation Check Mode - Toshiba HWT-602S21SM3W-E(TR) Service Manual

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
0 None
2WV_W
1
3WV_W
2
Mixing valve
3
Built-in circulation pump
4
External circulation pump 2
5
None
6
Water heat exchange backup
7
heater
Hot water cylinder heater
8
Booster heater
9
Check the alarm output.
A
Check the boiler output.
B
Check the defrost output.
C
Check the operation output.
D
None
E
Built-in circulation pump
continuous operation
F
Check contents
Alive for approx. 2 sec, not alive for 3
sec
Alive for 4 min in the heating / cooling
direction
Alive for 4 min in the hot water direction
Alive for 30 sec in the forward direction
Alive for 30 sec in the reverse direction
Alive / not alive for 20 sec
Alive / not alive for 20 sec
Repeat heater 1, heater 2, and OFF
every 20 sec
Alive / not alive for 20 sec
Alive / not alive for 20 sec
Output for 20 sec / no output for 20 sec
Output for 20 sec / no output for 20 sec
Output for 20 sec / no output for 20 sec
Output for 20 sec / no output for 20 sec
Continuously alive
155
Remark
OP.CH
2.ON ↔ 2.OFF
7 segment display
ON → heating, OFF → hot water
3.ON ↔ 3.OFF
F.ON ↔ F.OFF
P.ON ↔ P.OFF
P2.ON ↔ P2.OFF
The built-in circulation pump operates.
H.ON ↔ H.OFF
dH.ON ↔ dH.OFF
The built-in circulation pump and external
circulation pump operate.
bH.ON ↔ bH.OFF
01.ON ↔ 01.OFF
02.ON ↔ 02.OFF
03.ON ↔ 03.OFF
04.ON ↔ 04.OFF
Do not operate the circulation pump alive
continuously without any water in hydro unit.
P1.ON ↔ Flow rate display