Bosch IDS 2.0 Service Manual page 76

7 6 | Bosch IDS 2.0
Component Check
High voltage power supply
Low voltage power supply
LED Display
DC motor control power
DC voltage
LED light
Reversing valve (RV)
CCH - Crank Case Heater
PEV - Pressure Equalization Valve
EEV – Electronic Expansion Valve
PT - Pressure transducer
HPS - High pressure switch
Compressor
Table 51
Outdoor Board Component Check
Data subject to change
Measure location
Terminal Block
(L1-L)
CN9 Thermostat connection
(Y-C, B-C, W-C)
DSP1
CN3
(+15V-N)
CN3
(P-N)
LED 1/2/3
CN12
CN8
CN17
CN13
(All pins-GND)
CN16
(+5V-GND)
CN10
U-V, V-W, W-U
Parameter When to check
172-270V(AC) When there is high voltage power to unit
18-30V(AC) When there is call from thermostat
CODE or numbers When there is high voltage power to unit
14-18V(DC) When there is call from thermostat
370-385V(DC) When compressor starts
Light or fl ash When there is call from thermostat
Light or fl ash When there is B call from thermostat
At initial power on/long period in standby mode,
24-36V(AC)
see IOM
172-270V(AC) At initial power on/start up sequence
12V(DC) When there is B call from thermostat
5V (DC) When there is high voltage power to unit
1Ω When power OFF at breaker
<1.5Ω (3T), <1Ω (5T) When power OFF at breaker
Service Manual
07.2021 | Bosch Thermotechnology Corp.