Bradford White Everhot TG-150I-N(X) User Manual
Page 57
57
INITIAL OPERATION AND TESTING OF CONTROLS (INSTALLER ONLY)
1. Turn on power to the water heater and fully open a hot water tap.
2. Check the operation of the water heater. Check the operation of the remote temperature
control(s). Check the operation of the power failure protection system (drain solenoids).
3. Explain the proper operation of the new Bradford White EverHot
water heater to the end user.
Troubleshooting – Electrical
There are a number of (live) tests that are required when fault finding this product. Extreme care should
be used at all times to avoid contact with energized components inside the water heater. Only trained
and qualified service technicians should attempt to repair this product. Before checking for resistance
readings, disconnect the power source to the unit and isolate the item from the circuit (unplug it).
Table 15.
(SV1, SV2, SV3, and POV) Gas Valve and Modulating Solenoids (Set Meter Above 2k).
Wire Color
Voltage
Resistance
Connector
No.
Pin
Nos.
(Main) Pink-Black
11-13 VDC
36.8-44.8 ohms
H5
6-7
(SV1) Black-Yellow
11-13 VDC
36.8-44.8 ohms
H6
5-6
(SV2) Black-Blue
11-13 VDC
36.8-44.8 ohms
H7
4-6
(SV3) Black-Brown
11-13 VDC
36.8-44.8 ohms
H8
3-6
(POV) Pink-Pink
2-15 VDC
67-81 ohms
H3
9-10
Table 16.
(M) Water Flow Control Device Servo or Geared Motor.
Wire Color
Voltage
Resistance
Connector
No.
Pin
Nos.
Red-Blue
11-13 VDC
22-28 ohms
F7
9-10
Grey-Brown 4-6
VDC
n/a
F7 5-7
Grey-Yellow n/a
n/a
F7
5-8
Note: The grey wire listed above turns to black at F connector on the PCB.
Table 17.
(QS) Water Flow Sensor.
Wire Color
Voltage
Resistance
Connector
No.
Pin
Nos.
Black-Red
11-13 VDC
5.5-6.2k ohms
F2
1-3
Yellow-Black
4-7 VDC
1-1.4 Mega ohms
F2
2-3
Table 18.
By-pass Flow Control (By-pass Servo Model Only).
Wire Color
Voltage
Resistance
Connector
No.
Pin
Nos.
Brown-White
2-6 VDC (unit
in operating
mode)
15-35 ohms
G1 1-5
Orange-White G1
2-5
Yellow-White G1
3-5
Red-White -
Ground
G1 4-5
Table 19.
(IG) Ignition System.
Wire Color
Voltage
Resistance
Connector
No.
Pin
Nos.
Grey-Grey 90-110
VAC
n/a
C1 1-2