A1 Checking Voltage To Hot Tub - Jacuzzi J-315 Manual

A1 Checking Voltage To Hot Tub

Correct supply voltage wiring to the hot tub is essential for safe/proper operation. The first step in troubleshooting
a new installation should be to take voltage readings at the terminal block TB1. Do not trust wire colors. Electri-
cians 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 errors and voltage drops. 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.
• All models (except J-315 convertible models) are exclusively powered by 240 VAC. The J-315 models are
convertible for either 120 VAC 3-wire or 120/240 VAC 4-wire operation. The 4-wire power configuration
powers the heater only with 240 VAC for increased performance while powering all other components with
120 VAC.
Verify Power Connections As Follows:
US/Canada J-315 Model (120 VAC/60Hz, fig. K)
• Hot to Neutral: Measure across test points 1 and 23 with voltmeter for 120 VAC.
• Hot to Ground: Measure across test points 1 and 3 for 120 VAC.
US/Canada J-315 Model (240 VAC/60Hz, fig. L)
•
Hot to Neutral: Measure across test points 1 and 23 for 120 VAC; then across test points 2 and 23 for 120
VAC.
• Hot to Ground: Measure across test points 1 and 3 for 120 VAC; then across test points 2 and 3 for 120
VAC.
• Hot to Hot: Measure across test points 1 and 2 for 240 VAC.
US/Canada J-325, J-335, J-345 Models (240 VAC/60Hz, fig. M)
• Hot to Hot: Measure across test points 1 and 2 for 240 VAC.
• Hot to Ground: Measure across test points 1 and 3 for 120 VAC; then across test points 2 and 3 for 120
VAC.
fig. K
TB1
WHT
23
1
BLK
1
2
2
3
3
GRN
US/Canada (60 Hz)
120 VAC 3-Wire
J-315
WHT
WHT
RED
BLK
BLK BLK
to Circuit
Board
RED
US/Canada (60 Hz)
240 VAC 4-Wire
Danger: Electrical Shock Hazard Exists!
High Voltage Present On Circuit Board. Use
Extreme Caution While Servicing Circuit Board.
fig. L
TB1
WHT
23
1
BLK
BLK
1
2
RED
2
3
to Circuit
3
Board
GRN
J-315
46
fig. M
HOT
TB1
RED
HOT
2
1
HOT
BLK
HOT
1
2
to Circuit Board
3
GRN
US/Canada (60 Hz)
240 VAC 3-Wire
J-325, J-335, J-345