---
title: "T-Max® 1A, 3A, and 3W/G2™ Error Codes"
description: "Use this handy guide to identify and diagnose errors that may pop up while using your T-Max® controller. ### Error Codes **CODE** **ERROR** **SOLUTION** 91 **EEPROM Error** - On power up, detects error. - Cycle Power to the 1A, 3A,…"
url: "https://tmaxtimers.com/docs/t-max-1a-3a-and-3w-g2-error-codes/"
updated: "2023-10-19"
category: Error Codes
---

# T-Max® 1A, 3A, and 3W/G2™ Error Codes

Use this handy guide to identify and diagnose errors that may pop up while using your T-Max® controller.

### Error Codes

**CODE**

**ERROR**

**SOLUTION**

91

**EEPROM Error** - On power up, detects error.

- Cycle Power to the 1A, 3A, or 3W/G2™.
- If error occurs repeatedly or does not go away when you cycle power to the timer, replace the M**ax Time** chip located on the back of the 1A, 3A, or 3W/G2™.

92*

**Current Sense Error - Current Off** Session has started but bed is off.

If your timer is in the tanning bed, contact your tanning bed manufacturer.

- If you are not using a T-Max® Sentry, set parameter 4 to 0 on the T-Max® 1A, 3A.

**Check to see if bed is off or illuminates momentarily.**

**If bed is off**:

1. Check power to the bed.
2. Check outlet bed is plugged into.
3. Check circuit breaker.
4. Swap 1A or 3A with one that is known to work.

**If bed illuminates momentarily:**

1. Make sure T-Max® Sentry is connected properly (refer to T-Max® 1A or 3A User’s Guide).
2. Have electrician check current draw on tanning bed. If the bed draws less than 10AMPS, the wire from the bed needs to be wrapped around the T-Max® Sentry one time. Refer to the T-Max® 1A or 3A User’s Guide.

93

**Current Sense Error > Current On** - Session has expired but bed remains on.

- This is an indication that your tanning bed is on when it should not be. If your timer is in the tanning bed, contact your tanning bed manufacturer.
- Have a certified electrician disconnect the wires from the “J3-Contact” screw terminal on the back the of the 1A, 3A, or 3W/G2™. If the tanning bed stays illuminated, contact the tanning bed manufacturer. If the tanning bed turns off, the 1A, 3A, or 3W/G2™ will have to be replaced.

94

**Max Time Error** - 1A, 3A, or 3W/G2™ reporting wrong Max Time.

1. Cycle Power to the 1A, 3A, or 3W/G2™.
2. If error occurs repeatedly, or does not go away when you cycle power to the timer, replace the **Max Time** chip located on the back of the 1A, 3A, or 3W/G2™.

96

**Checksum Error** - T-Max® Manager received bad value from 1A, 3a, or 3W/G2™.

If 96 appears on the timer in the room, the timer has reached its profit sharing parameter. Usually caused by a power problem. Perform a factory reset on the timer in the room.

* A T-Max® 3W/G2™ will not display this error. This is only in reference to the T-Max® 1As and T-Max® 3As.