43
A1 Checking Voltage to Hot Tub
Correct supply voltage wiring to the hot tub is essential for safe/proper operation. The first step in troubleshoot-
ing a new installation should be to take voltage readings at the terminal block TB1.
Do not trust wire colors.
Electricians make mistakes and electrons are color-blind.
A low line voltage or incorrectly wired hot tub
will result in either of the following symptoms: A) Strange or intermittent symptoms, B) Displays with indications
that simply cannot be correct
Many of the most perplexing problems in the past have been wiring errors and voltage drop problems.
Human
safety depends on proper hot tub grounding. It is essential that the voltage readings described below
are as indicated. The ground connection must be heavy duty wiring.
• J-210, 2011-2013 J-315, 2011-2013 J-325 North American 60 Hz are convertible for either 120 VAC 3-wire
operation or 240 VAC 4-wire operation. The 4-wire power configuration powers the heater with 240 VAC for
increased performance while powering all other components with 120 VAC.
• All other models are North American 60 Hz are exclusively powered by 240 VAC.
•
All Models Export 50 Hz
are exclusively powered by 230 VAC ±10%,
see Figure C below
.
Verify All Convertible Models Power Connections as Follows:
North American Models (120 VAC/60 Hz, Fig. A)
• Hot to Neutral: Measure across test points 1 and 2 with voltmeter for 120 VAC.
• Hot to Ground Test: Measure across test points 2 to 23 for 120 VAC.
North American Models (240 VAC/60 Hz, Fig. B)
• Hot to Neutral: Measure across test points 1 and 2 with voltmeter for 120 VAC; then across test points 1
and 24 for 120 VAC.
• Hot to Ground: Measure across test points 2 and 23 for 120 VAC; then across test points 24 and 23 for 120
VAC.
• Hot to Hot: Measure across test points 2 and 24 for 240 VAC.
DANGER: Electrical Shock Hazard Exists!
High Voltage Present on Circuit Board. Use
Extreme Caution while Servicing Circuit Board.
BLUE
BLUE
BROWN
BROWN
GRN
1
2
GRN
WHT
WHT
BLK
BLK
BLK
RED
1
2
3
North American (60 Hz)
120 VAC 3-Wire
J-210, J-315, J-325
GRN
WHT
WHT
BLK
BLK
BLK
RED
RED
1
2
3
North American (60 Hz)
240 VAC 4-Wire
J-210, J-315, J-325
Fig. C
TB1
TB1
TB1
1
2
24
23
24
23
23
1
2
1
2
Export (50 Hz)
230 VAC 3-Wire
J-210, J-315, J-325
to Circuit
Board
to Circuit
Board
to Circuit
Board
Power In
Power In
Power In
Fig. B
Fig. A
TB2
For Heater
